(function (global, factory) {
  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
    typeof define === 'function' && define.amd ? define(factory) :
      (global.wangEditor = factory());
}(this, (function () {
  'use strict';
  /*
    poly-fill
*/

  var polyfill = function () {

    // Object.assign
    if (typeof Object.assign != 'function') {
      Object.assign = function (target, varArgs) {
        // .length of function is 2
        if (target == null) {
          // TypeError if undefined or null
          throw new TypeError('Cannot convert undefined or null to object');
        }

        var to = Object(target);

        for (var index = 1; index < arguments.length; index++) {
          var nextSource = arguments[index];

          if (nextSource != null) {
            // Skip over if undefined or null
            for (var nextKey in nextSource) {
              // Avoid bugs when hasOwnProperty is shadowed
              if (Object.prototype.hasOwnProperty.call(nextSource, nextKey)) {
                to[nextKey] = nextSource[nextKey];
              }
            }
          }
        }
        return to;
      };
    }

    // IE 中兼容 Element.prototype.matches
    if (!Element.prototype.matches) {
      Element.prototype.matches = Element.prototype.matchesSelector || Element.prototype.mozMatchesSelector || Element.prototype.msMatchesSelector || Element.prototype.oMatchesSelector || Element.prototype.webkitMatchesSelector || function (s) {
        var matches = (this.document || this.ownerDocument).querySelectorAll(s),
          i = matches.length;
        while (--i >= 0 && matches.item(i) !== this) {
        }
        return i > -1;
      };
    }
  };

  /*
    DOM 操作 API
*/

// 根据 html 代码片段创建 dom 对象
  function createElemByHTML(html) {
    var div = void 0;
    div = document.createElement('div');
    div.innerHTML = html;
    return div.children;
  }

// 是否是 DOM List
  function isDOMList(selector) {
    if (!selector) {
      return false;
    }
    if (selector instanceof HTMLCollection || selector instanceof NodeList) {
      return true;
    }
    return false;
  }

// 封装 document.querySelectorAll
  function querySelectorAll(selector) {
    var result = document.querySelectorAll(selector);
    if (isDOMList(result)) {
      return result;
    } else {
      return [result];
    }
  }

// 记录所有的事件绑定
  var eventList = [];

// 创建构造函数
  function DomElement(selector) {
    if (!selector) {
      return;
    }

    // selector 本来就是 DomElement 对象，直接返回
    if (selector instanceof DomElement) {
      return selector;
    }

    this.selector = selector;
    var nodeType = selector.nodeType;

    // 根据 selector 得出的结果（如 DOM，DOM List）
    var selectorResult = [];
    if (nodeType === 9) {
      // document 节点
      selectorResult = [selector];
    } else if (nodeType === 1) {
      // 单个 DOM 节点
      selectorResult = [selector];
    } else if (isDOMList(selector) || selector instanceof Array) {
      // DOM List 或者数组
      selectorResult = selector;
    } else if (typeof selector === 'string') {
      // 字符串
      selector = selector.replace('/\n/mg', '').trim();
      if (selector.indexOf('<') === 0) {
        // 如 <div>
        selectorResult = createElemByHTML(selector);
      } else {
        // 如 #id .class
        selectorResult = querySelectorAll(selector);
      }
    }

    var length = selectorResult.length;
    if (!length) {
      // 空数组
      return this;
    }

    // 加入 DOM 节点
    var i = void 0;
    for (i = 0; i < length; i++) {
      this[i] = selectorResult[i];
    }
    this.length = length;
  }

// 修改原型
  DomElement.prototype = {
    constructor: DomElement,

    // 类数组，forEach
    forEach: function forEach(fn) {
      var i = void 0;
      for (i = 0; i < this.length; i++) {
        var elem = this[i];
        var result = fn.call(elem, elem, i);
        if (result === false) {
          break;
        }
      }
      return this;
    },

    // clone
    clone: function clone(deep) {
      var cloneList = [];
      this.forEach(function (elem) {
        cloneList.push(elem.cloneNode(!!deep));
      });
      return $(cloneList);
    },

    // 获取第几个元素
    get: function get(index) {
      var length = this.length;
      if (index >= length) {
        index = index % length;
      }
      return $(this[index]);
    },

    // 第一个
    first: function first() {
      return this.get(0);
    },

    // 最后一个
    last: function last() {
      var length = this.length;
      return this.get(length - 1);
    },

    // 绑定事件
    on: function on(type, selector, fn) {
      // selector 不为空，证明绑定事件要加代理
      if (!fn) {
        fn = selector;
        selector = null;
      }

      // type 是否有多个
      var types = [];
      types = type.split(/\s+/);

      return this.forEach(function (elem) {
        types.forEach(function (type) {
          if (!type) {
            return;
          }

          // 记录下，方便后面解绑
          eventList.push({
            elem: elem,
            type: type,
            fn: fn
          });

          if (!selector) {
            // 无代理
            elem.addEventListener(type, fn);
            return;
          }

          // 有代理
          elem.addEventListener(type, function (e) {
            var target = e.target;
            if (target.matches(selector)) {
              fn.call(target, e);
            }
          });
        });
      });
    },

    // 取消事件绑定
    off: function off(type, fn) {
      return this.forEach(function (elem) {
        elem.removeEventListener(type, fn);
      });
    },

    // 获取/设置 属性
    attr: function attr(key, val) {
      if (val == null) {
        // 获取值
        return this[0].getAttribute(key);
      } else {
        // 设置值
        return this.forEach(function (elem) {
          elem.setAttribute(key, val);
        });
      }
    },

    // 添加 class
    addClass: function addClass(className) {
      if (!className) {
        return this;
      }
      return this.forEach(function (elem) {
        var arr = void 0;
        if (elem.className) {
          // 解析当前 className 转换为数组
          arr = elem.className.split(/\s/);
          arr = arr.filter(function (item) {
            return !!item.trim();
          });
          // 添加 class
          if (arr.indexOf(className) < 0) {
            arr.push(className);
          }
          // 修改 elem.class
          elem.className = arr.join(' ');
        } else {
          elem.className = className;
        }
      });
    },

    // 删除 class
    removeClass: function removeClass(className) {
      if (!className) {
        return this;
      }
      return this.forEach(function (elem) {
        var arr = void 0;
        if (elem.className) {
          // 解析当前 className 转换为数组
          arr = elem.className.split(/\s/);
          arr = arr.filter(function (item) {
            item = item.trim();
            // 删除 class
            if (!item || item === className) {
              return false;
            }
            return true;
          });
          // 修改 elem.class
          elem.className = arr.join(' ');
        }
      });
    },

    // 修改 css
    css: function css(key, val) {
      var currentStyle = key + ':' + val + ';';
      return this.forEach(function (elem) {
        var style = (elem.getAttribute('style') || '').trim();
        var styleArr = void 0,
          resultArr = [];
        if (style) {
          // 将 style 按照 ; 拆分为数组
          styleArr = style.split(';');
          styleArr.forEach(function (item) {
            // 对每项样式，按照 : 拆分为 key 和 value
            var arr = item.split(':').map(function (i) {
              return i.trim();
            });
            if (arr.length === 2) {
              resultArr.push(arr[0] + ':' + arr[1]);
            }
          });
          // 替换或者新增
          resultArr = resultArr.map(function (item) {
            if (item.indexOf(key) === 0) {
              return currentStyle;
            } else {
              return item;
            }
          });
          if (resultArr.indexOf(currentStyle) < 0) {
            resultArr.push(currentStyle);
          }
          // 结果
          elem.setAttribute('style', resultArr.join('; '));
        } else {
          // style 无值
          elem.setAttribute('style', currentStyle);
        }
      });
    },

    // 显示
    show: function show() {
      return this.css('display', 'block');
    },

    // 隐藏
    hide: function hide() {
      return this.css('display', 'none');
    },

    // 获取子节点
    children: function children() {
      var elem = this[0];
      if (!elem) {
        return null;
      }

      return $(elem.children);
    },

    // 获取子节点（包括文本节点）
    childNodes: function childNodes() {
      var elem = this[0];
      if (!elem) {
        return null;
      }

      return $(elem.childNodes);
    },

    // 增加子节点
    append: function append($children) {
      return this.forEach(function (elem) {
        $children.forEach(function (child) {
          elem.appendChild(child);
        });
      });
    },

    // 移除当前节点
    remove: function remove() {
      return this.forEach(function (elem) {
        if (elem.remove) {
          elem.remove();
        } else {
          var parent = elem.parentElement;
          parent && parent.removeChild(elem);
        }
      });
    },

    // 是否包含某个子节点
    isContain: function isContain($child) {
      var elem = this[0];
      var child = $child[0];
      return elem.contains(child);
    },

    // 尺寸数据
    getSizeData: function getSizeData() {
      var elem = this[0];
      return elem.getBoundingClientRect(); // 可得到 bottom height left right top width 的数据
    },

    // 封装 nodeName
    getNodeName: function getNodeName() {
      var elem = this[0];
      return elem.nodeName;
    },

    // 从当前元素查找
    find: function find(selector) {
      var elem = this[0];
      return $(elem.querySelectorAll(selector));
    },

    // 获取当前元素的 text
    text: function text(val) {
      if (!val) {
        // 获取 text
        var elem = this[0];
        return elem.innerHTML.replace(/<.*?>/g, function () {
          return '';
        });
      } else {
        // 设置 text
        return this.forEach(function (elem) {
          elem.innerHTML = val;
        });
      }
    },

    // 获取 html
    html: function html(value) {
      var elem = this[0];
      if (value == null) {
        return elem.innerHTML;
      } else {
        elem.innerHTML = value;
        return this;
      }
    },

    // 获取 value
    val: function val() {
      var elem = this[0];
      return elem.value.trim();
    },

    // focus
    focus: function focus() {
      return this.forEach(function (elem) {
        elem.focus();
      });
    },

    // parent
    parent: function parent() {
      var elem = this[0];
      return $(elem.parentElement);
    },

    // parentUntil 找到符合 selector 的父节点
    parentUntil: function parentUntil(selector, _currentElem) {
      var results = document.querySelectorAll(selector);
      var length = results.length;
      if (!length) {
        // 传入的 selector 无效
        return null;
      }

      var elem = _currentElem || this[0];
      if (elem.nodeName === 'BODY') {
        return null;
      }

      var parent = elem.parentElement;
      var i = void 0;
      for (i = 0; i < length; i++) {
        if (parent === results[i]) {
          // 找到，并返回
          return $(parent);
        }
      }

      // 继续查找
      return this.parentUntil(selector, parent);
    },

    // 判断两个 elem 是否相等
    equal: function equal($elem) {
      if ($elem.nodeType === 1) {
        return this[0] === $elem;
      } else {
        return this[0] === $elem[0];
      }
    },

    // 将该元素插入到某个元素前面
    insertBefore: function insertBefore(selector) {
      var $referenceNode = $(selector);
      var referenceNode = $referenceNode[0];
      if (!referenceNode) {
        return this;
      }
      return this.forEach(function (elem) {
        var parent = referenceNode.parentNode;
        parent.insertBefore(elem, referenceNode);
      });
    },

    // 将该元素插入到某个元素后面
    insertAfter: function insertAfter(selector) {
      var $referenceNode = $(selector);
      var referenceNode = $referenceNode[0];
      if (!referenceNode) {
        return this;
      }
      return this.forEach(function (elem) {
        var parent = referenceNode.parentNode;
        if (parent.lastChild === referenceNode) {
          // 最后一个元素
          parent.appendChild(elem);
        } else {
          // 不是最后一个元素
          parent.insertBefore(elem, referenceNode.nextSibling);
        }
      });
    }
  };

// new 一个对象
  function $(selector) {
    return new DomElement(selector);
  }

// 解绑所有事件，用于销毁编辑器
  $.offAll = function () {
    eventList.forEach(function (item) {
      var elem = item.elem;
      var type = item.type;
      var fn = item.fn;
      // 解绑
      elem.removeEventListener(type, fn);
    });
  };

  /*
    配置信息
*/

  var config = {

    // 默认菜单配置
    menus: ['head', 'bold', 'fontSize', 'fontName', 'italic', 'underline', 'strikeThrough', 'foreColor', 'backColor', 'link', 'list', 'justify', 'quote', 'emoticon', 'image', 'table', 'video', 'code', 'undo', 'redo'],

    fontNames: ['宋体', '微软雅黑', 'Arial', 'Tahoma', 'Verdana'],

    colors: ['#000000', '#eeece0', '#1c487f', '#4d80bf', '#c24f4a', '#8baa4a', '#7b5ba1', '#46acc8', '#f9963b', '#ffffff'],

    // // 语言配置
    // lang: {
    //     '设置标题': 'title',
    //     '正文': 'p',
    //     '链接文字': 'link text',
    //     '链接': 'link',
    //     '插入': 'insert',
    //     '创建': 'init'
    // },

    // 表情
    emotions: [{
      // tab 的标题
      title: '默认',
      // type -> 'emoji' / 'image'
      type: 'image',
      // content -> 数组
      content: [{
        alt: '[坏笑]',
        src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/50/pcmoren_huaixiao_org.png'
      }, {
        alt: '[舔屏]',
        src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/40/pcmoren_tian_org.png'
      }, {
        alt: '[污]',
        src: 'http://img.t.sinajs.cn/t4/appstyle/expression/ext/normal/3c/pcmoren_wu_org.png'
      },
        {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/7a/shenshou_thumb.gif",
          alt: "[草泥马]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/60/horse2_thumb.gif",
          alt: "[神马]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/bc/fuyun_thumb.gif",
          alt: "[浮云]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c9/geili_thumb.gif",
          alt: "[给力]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/f2/wg_thumb.gif",
          alt: "[围观]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/70/vw_thumb.gif",
          alt: "[威武]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6e/panda_thumb.gif",
          alt: "[熊猫]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/81/rabbit_thumb.gif",
          alt: "[兔子]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/bc/otm_thumb.gif",
          alt: "[奥特曼]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/15/j_thumb.gif",
          alt: "[囧]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/89/hufen_thumb.gif",
          alt: "[互粉]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c4/liwu_thumb.gif",
          alt: "[礼物]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/ac/smilea_thumb.gif",
          alt: "[呵呵]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/0b/tootha_thumb.gif",
          alt: "[嘻嘻]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6a/laugh.gif",
          alt: "[哈哈]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/14/tza_thumb.gif",
          alt: "[可爱]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/af/kl_thumb.gif",
          alt: "[可怜]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/a0/kbsa_thumb.gif",
          alt: "[挖鼻屎]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/f4/cj_thumb.gif",
          alt: "[吃惊]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6e/shamea_thumb.gif",
          alt: "[害羞]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c3/zy_thumb.gif",
          alt: "[挤眼]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/29/bz_thumb.gif",
          alt: "[闭嘴]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/71/bs2_thumb.gif",
          alt: "[鄙视]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6d/lovea_thumb.gif",
          alt: "[爱你]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/9d/sada_thumb.gif",
          alt: "[泪]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/19/heia_thumb.gif",
          alt: "[偷笑]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/8f/qq_thumb.gif",
          alt: "[亲亲]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/b6/sb_thumb.gif",
          alt: "[生病]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/58/mb_thumb.gif",
          alt: "[太开心]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/17/ldln_thumb.gif",
          alt: "[懒得理你]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/98/yhh_thumb.gif",
          alt: "[右哼哼]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6d/zhh_thumb.gif",
          alt: "[左哼哼]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/a6/x_thumb.gif",
          alt: "[嘘]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/af/cry.gif",
          alt: "[衰]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/73/wq_thumb.gif",
          alt: "[委屈]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/9e/t_thumb.gif",
          alt: "[吐]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/f3/k_thumb.gif",
          alt: "[打哈欠]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/27/bba_thumb.gif",
          alt: "[抱抱]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/7c/angrya_thumb.gif",
          alt: "[怒]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/5c/yw_thumb.gif",
          alt: "[疑问]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/a5/cza_thumb.gif",
          alt: "[馋嘴]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/70/88_thumb.gif",
          alt: "[拜拜]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/e9/sk_thumb.gif",
          alt: "[思考]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/24/sweata_thumb.gif",
          alt: "[汗]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/7f/sleepya_thumb.gif",
          alt: "[困]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6b/sleepa_thumb.gif",
          alt: "[睡觉]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/90/money_thumb.gif",
          alt: "[钱]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/0c/sw_thumb.gif",
          alt: "[失望]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/40/cool_thumb.gif",
          alt: "[酷]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/8c/hsa_thumb.gif",
          alt: "[花心]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/49/hatea_thumb.gif",
          alt: "[哼]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/36/gza_thumb.gif",
          alt: "[鼓掌]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d9/dizzya_thumb.gif",
          alt: "[晕]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/1a/bs_thumb.gif",
          alt: "[悲伤]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/62/crazya_thumb.gif",
          alt: "[抓狂]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/91/h_thumb.gif",
          alt: "[黑线]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6d/yx_thumb.gif",
          alt: "[阴险]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/89/nm_thumb.gif",
          alt: "[怒骂]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/40/hearta_thumb.gif",
          alt: "[心]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/ea/unheart.gif",
          alt: "[伤心]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/58/pig.gif",
          alt: "[猪头]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d6/ok_thumb.gif",
          alt: "[ok]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d9/ye_thumb.gif",
          alt: "[耶]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d8/good_thumb.gif",
          alt: "[good]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/c7/no_thumb.gif",
          alt: "[不要]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d0/z2_thumb.gif",
          alt: "[赞]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/40/come_thumb.gif",
          alt: "[来]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d8/sad_thumb.gif",
          alt: "[弱]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/91/lazu_thumb.gif",
          alt: "[蜡烛]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/6a/cake.gif",
          alt: "[蛋糕]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/d3/clock_thumb.gif",
          alt: "[钟]"
        }, {
          src: "http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/1b/m_thumb.gif",
          alt: "[话筒]"
        }
      ]
    }, {
      // tab 的标题
      title: '新浪',
      // type -> 'emoji' / 'image'
      type: 'image',
      // content -> 数组
      content: [{
        src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/7a/shenshou_thumb.gif',
        alt: '[草泥马]'
      }, {
        src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/60/horse2_thumb.gif',
        alt: '[神马]'
      }, {
        src: 'http://img.t.sinajs.cn/t35/style/images/common/face/ext/normal/bc/fuyun_thumb.gif',
        alt: '[浮云]'
      }]
    }, {
      // tab 的标题
      title: 'emoji',
      // type -> 'emoji' / 'image'
      type: 'emoji',
      // content -> 数组
      content: '😀 😃 😄 😁 😆 😅 😂 😊 😇 🙂 🙃 😉 😓 😪 😴 🙄 🤔 😬 🤐'.split(/\s/)
    }],

    // 编辑区域的 z-index
    zIndex: 10000,

    // 是否开启 debug 模式（debug 模式下错误会 throw error 形式抛出）
    debug: false,

    // 插入链接时候的格式校验
    linkCheck: function linkCheck(text, link) {
      // text 是插入的文字
      // link 是插入的链接
      return true; // 返回 true 即表示成功
      // return '校验失败' // 返回字符串即表示失败的提示信息
    },

    // 插入网络图片的校验
    linkImgCheck: function linkImgCheck(src) {
      // src 即图片的地址
      return true; // 返回 true 即表示成功
      // return '校验失败'  // 返回字符串即表示失败的提示信息
    },

    // 粘贴过滤样式，默认开启
    pasteFilterStyle: true,

    // 粘贴内容时，忽略图片。默认关闭
    pasteIgnoreImg: false,

    // 对粘贴的文字进行自定义处理，返回处理后的结果。编辑器会将处理后的结果粘贴到编辑区域中。
    // IE 暂时不支持
    pasteTextHandle: function pasteTextHandle(content) {
      // content 即粘贴过来的内容（html 或 纯文本），可进行自定义处理然后返回
      return content;
    },

    // onchange 事件
    // onchange: function (html) {
    //     // html 即变化之后的内容
    //     console.log(html)
    // },

    // 是否显示添加网络图片的 tab
    showLinkImg: true,

    // 插入网络图片的回调
    linkImgCallback: function linkImgCallback(url) {
      // console.log(url)  // url 即插入图片的地址
    },

    // 默认上传图片 max size: 5M
    uploadImgMaxSize: 200 * 1024 * 1024,

    // 配置一次最多上传几个图片
    uploadImgMaxLength: 1,

    // 上传图片，是否显示 base64 格式
    uploadImgShowBase64: false,

    // 上传图片，server 地址（如果有值，则 base64 格式的配置则失效）
    // uploadImgServer: '/upload',

    // 自定义配置 filename
    uploadFileName: '',

    // 上传图片的自定义参数
    uploadImgParams: {
      // token: 'abcdef12345'
    },

    // 上传图片的自定义header
    uploadImgHeaders: {
      // 'Accept': 'text/x-json'
    },

    // 配置 XHR withCredentials
    withCredentials: false,

    // 自定义上传图片超时时间 ms
    uploadImgTimeout: 10000,

    // 上传图片 hook
    uploadImgHooks: {
      // customInsert: function (insertLinkImg, result, editor) {
      //     console.log('customInsert')
      //     // 图片上传并返回结果，自定义插入图片的事件，而不是编辑器自动插入图片
      //     const data = result.data1 || []
      //     data.forEach(link => {
      //         insertLinkImg(link)
      //     })
      // },
      before: function before(xhr, editor, files) {
        // 图片上传之前触发

        // 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
        // return {
        //     prevent: true,
        //     msg: '放弃上传'
        // }
      },
      success: function success(xhr, editor, result) {
        // 图片上传并返回结果，图片插入成功之后触发
      },
      fail: function fail(xhr, editor, result) {
        // 图片上传并返回结果，但图片插入错误时触发
      },
      error: function error(xhr, editor) {
        // 图片上传出错时触发
      },
      timeout: function timeout(xhr, editor) {
        // 图片上传超时时触发
      }
    },

    // 是否上传七牛云，默认为 false
    qiniu: false

  };

  /*
    工具
*/

// 和 UA 相关的属性
  var UA = {
    _ua: navigator.userAgent,

    // 是否 webkit
    isWebkit: function isWebkit() {
      var reg = /webkit/i;
      return reg.test(this._ua);
    },

    // 是否 IE
    isIE: function isIE() {
      return 'ActiveXObject' in window;
    }
  };

// 遍历对象
  function objForEach(obj, fn) {
    var key = void 0,
      result = void 0;
    for (key in obj) {
      if (obj.hasOwnProperty(key)) {
        result = fn.call(obj, key, obj[key]);
        if (result === false) {
          break;
        }
      }
    }
  }

// 遍历类数组
  function arrForEach(fakeArr, fn) {
    var i = void 0,
      item = void 0,
      result = void 0;
    var length = fakeArr.length || 0;
    for (i = 0; i < length; i++) {
      item = fakeArr[i];
      result = fn.call(fakeArr, item, i);
      if (result === false) {
        break;
      }
    }
  }

// 获取随机数
  function getRandom(prefix) {
    return prefix + Math.random().toString().slice(2);
  }

// 替换 html 特殊字符
  function replaceHtmlSymbol(html) {
    if (html == null) {
      return '';
    }
    return html.replace(/</gm, '&lt;').replace(/>/gm, '&gt;').replace(/"/gm, '&quot;').replace(/(\r\n|\r|\n)/g, '<br/>');
  }

// 返回百分比的格式


// 判断是不是 function
  function isFunction(fn) {
    return typeof fn === 'function';
  }

  /*
    bold-menu
*/

// 构造函数
  function Bold(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-bold"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Bold.prototype = {
    constructor: Bold,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里

      var editor = this.editor;
      var isSeleEmpty = editor.selection.isSelectionEmpty();

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange();
      }

      // 执行 bold 命令
      editor.cmd.do('bold');

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange();
        editor.selection.restoreSelection();
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor.cmd.queryCommandState('bold')) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    替换多语言
 */

  var replaceLang = function (editor, str) {
    var langArgs = editor.config.langArgs || [];
    var result = str;

    langArgs.forEach(function (item) {
      var reg = item.reg;
      var val = item.val;

      if (reg.test(result)) {
        result = result.replace(reg, function () {
          return val;
        });
      }
    });

    return result;
  };

  /*
    droplist
*/
  var _emptyFn = function _emptyFn() {
  };

// 构造函数
  function DropList(menu, opt) {
    var _this = this;

    // droplist 所依附的菜单
    var editor = menu.editor;
    this.menu = menu;
    this.opt = opt;
    // 容器
    var $container = $('<div class="w-e-droplist"></div>');

    // 标题
    var $title = opt.$title;
    var titleHtml = void 0;
    if ($title) {
      // 替换多语言
      titleHtml = $title.html();
      titleHtml = replaceLang(editor, titleHtml);
      $title.html(titleHtml);

      $title.addClass('w-e-dp-title');
      $container.append($title);
    }

    var list = opt.list || [];
    var type = opt.type || 'list'; // 'list' 列表形式（如“标题”菜单） / 'inline-block' 块状形式（如“颜色”菜单）
    var onClick = opt.onClick || _emptyFn;

    // 加入 DOM 并绑定事件
    var $list = $('<ul class="' + (type === 'list' ? 'w-e-list' : 'w-e-block') + '"></ul>');
    $container.append($list);
    list.forEach(function (item) {
      var $elem = item.$elem;

      // 替换多语言
      var elemHtml = $elem.html();
      elemHtml = replaceLang(editor, elemHtml);
      $elem.html(elemHtml);

      var value = item.value;
      var $li = $('<li class="w-e-item"></li>');
      if ($elem) {
        $li.append($elem);
        $list.append($li);
        $li.on('click', function (e) {
          onClick(value);

          // 隐藏
          _this.hideTimeoutId = setTimeout(function () {
            _this.hide();
          }, 0);
        });
      }
    });

    // 绑定隐藏事件
    $container.on('mouseleave', function (e) {
      _this.hideTimeoutId = setTimeout(function () {
        _this.hide();
      }, 0);
    });

    // 记录属性
    this.$container = $container;

    // 基本属性
    this._rendered = false;
    this._show = false;
  }

// 原型
  DropList.prototype = {
    constructor: DropList,

    // 显示（插入DOM）
    show: function show() {
      if (this.hideTimeoutId) {
        // 清除之前的定时隐藏
        clearTimeout(this.hideTimeoutId);
      }

      var menu = this.menu;
      var $menuELem = menu.$elem;
      var $container = this.$container;
      if (this._show) {
        return;
      }
      if (this._rendered) {
        // 显示
        $container.show();
      } else {
        // 加入 DOM 之前先定位位置
        var menuHeight = $menuELem.getSizeData().height || 0;
        var width = this.opt.width || 100; // 默认为 100
        $container.css('margin-top', menuHeight + 'px').css('width', width + 'px');

        // 加入到 DOM
        $menuELem.append($container);
        this._rendered = true;
      }

      // 修改属性
      this._show = true;
    },

    // 隐藏（移除DOM）
    hide: function hide() {
      if (this.showTimeoutId) {
        // 清除之前的定时显示
        clearTimeout(this.showTimeoutId);
      }

      var $container = this.$container;
      if (!this._show) {
        return;
      }
      // 隐藏并需改属性
      $container.hide();
      this._show = false;
    }
  };

  /*
    menu - header
*/

// 构造函数
  function Head(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-header"></i></div>');
    this.type = 'droplist';

    // 当前是否 active 状态
    this._active = false;

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 100,
      $title: $('<p>设置标题</p>'),
      type: 'list', // droplist 以列表形式展示
      list: [{$elem: $('<h1>H1</h1>'), value: '<h1>'}, {
        $elem: $('<h2>H2</h2>'),
        value: '<h2>'
      }, {$elem: $('<h3>H3</h3>'), value: '<h3>'}, {$elem: $('<h4>H4</h4>'), value: '<h4>'}, {
        $elem: $('<h5>H5</h5>'),
        value: '<h5>'
      }, {$elem: $('<p>正文</p>'), value: '<p>'}],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 Head 对象
        _this._command(value);
      }
    });
  }

// 原型
  Head.prototype = {
    constructor: Head,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor;

      var $selectionElem = editor.selection.getSelectionContainerElem();
      if (editor.$textElem.equal($selectionElem)) {
        // 不能选中多行来设置标题，否则会出现问题
        // 例如选中的是 <p>xxx</p><p>yyy</p> 来设置标题，设置之后会成为 <h1>xxx<br>yyy</h1> 不符合预期
        return;
      }

      editor.cmd.do('formatBlock', value);
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      var reg = /^h/i;
      var cmdValue = editor.cmd.queryCommandValue('formatBlock');
      if (reg.test(cmdValue)) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    menu - fontSize
*/

// 构造函数
  function FontSize(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-text-heigh"></i></div>');
    this.type = 'droplist';

    // 当前是否 active 状态
    this._active = false;

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 160,
      $title: $('<p>字号</p>'),
      type: 'list', // droplist 以列表形式展示
      list: [{
        $elem: $('<span style="font-size: 12px;">12px</span>'),
        value: '1'
      }, {
        $elem: $('<span style="font-size: 13px;">13px</span>'), value: '2'
      },
        {$elem: $('<span>14px</span>'), value: '3'},
        {
          $elem: $('<span style="font-size: 15px;">15px</span>'), value: '4'
        }, {
          $elem: $('<span style="font-size: 16px;">16px</span>'),
          value: '5'
        }, {$elem: $('<span style="font-size: 17px;">17px</span>'), value: '6'},
        {$elem: $('<span style="font-size: 18px;">18px</span>'), value: '7'},
        {$elem: $('<span style="font-size: 19px;">19px</span>'), value: '8'},
        // {$elem: $('<span style="font-size: 20px;">20px</span>'), value: '9'},
        // {$elem: $('<span style="font-size: 21px;">21px</span>'), value: '10'},
        // {$elem: $('<span style="font-size: 22px;">22px</span>'), value: '11'},
        // {$elem: $('<span style="font-size: 23px;">23px</span>'), value: '12'},
        // {$elem: $('<span style="font-size: 24px;">24px</span>'), value: '13'},
        // {$elem: $('<span style="font-size: 25px;">25px</span>'), value: '14'},
        // {$elem: $('<span style="font-size: 25px;">36px</span>'), value: '15'},
        // {$elem: $('<span style="font-size: 25px;">46px</span>'), value: '16'},
        // {$elem: $('<span style="font-size: 25px;">56px</span>'), value: '17'},
      ],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 FontSize 对象
        _this._command(value);
      }
    });
  }

// 原型
  FontSize.prototype = {
    constructor: FontSize,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor;
      editor.cmd.do('fontSize', value);
    }
  };

  /*
    menu - fontName
*/

// 构造函数
  function FontName(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-font"></i></div>');
    this.type = 'droplist';

    // 当前是否 active 状态
    this._active = false;

    // 获取配置的字体
    var config = editor.config;
    var fontNames = config.fontNames || [];

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 100,
      $title: $('<p>字体</p>'),
      type: 'list', // droplist 以列表形式展示
      list: fontNames.map(function (fontName) {
        return {$elem: $('<span style="font-family: ' + fontName + ';">' + fontName + '</span>'), value: fontName};
      }),
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 FontName 对象
        _this._command(value);
      }
    });
  }

// 原型
  FontName.prototype = {
    constructor: FontName,

    _command: function _command(value) {
      var editor = this.editor;
      editor.cmd.do('fontName', value);
    }
  };

  /*
    panel
*/

  var emptyFn = function emptyFn() {
  };

// 记录已经显示 panel 的菜单
  var _isCreatedPanelMenus = [];

// 构造函数
  function Panel(menu, opt) {
    this.menu = menu;
    this.opt = opt;
  }

// 原型
  Panel.prototype = {
    constructor: Panel,

    // 显示（插入DOM）
    show: function show() {
      var _this = this;

      var menu = this.menu;
      if (_isCreatedPanelMenus.indexOf(menu) >= 0) {
        // 该菜单已经创建了 panel 不能再创建
        return;
      }

      var editor = menu.editor;
      var $body = $('body');
      var $textContainerElem = editor.$textContainerElem;
      var opt = this.opt;

      // panel 的容器
      var $container = $('<div class="w-e-panel-container"></div>');
      var width = opt.width || 300; // 默认 300px
      $container.css('width', width + 'px').css('margin-left', (0 - width) / 2 + 'px');

      // 添加关闭按钮
      var $closeBtn = $('<i class="w-e-icon-close w-e-panel-close"></i>');
      $container.append($closeBtn);
      $closeBtn.on('click', function () {
        _this.hide();
      });

      // 准备 tabs 容器
      var $tabTitleContainer = $('<ul class="w-e-panel-tab-title"></ul>');
      var $tabContentContainer = $('<div class="w-e-panel-tab-content"></div>');
      $container.append($tabTitleContainer).append($tabContentContainer);

      // 设置高度
      var height = opt.height;
      if (height) {
        $tabContentContainer.css('height', height + 'px').css('overflow-y', 'auto');
      }

      // tabs
      var tabs = opt.tabs || [];
      var tabTitleArr = [];
      var tabContentArr = [];
      tabs.forEach(function (tab, tabIndex) {
        if (!tab) {
          return;
        }
        var title = tab.title || '';
        var tpl = tab.tpl || '';

        // 替换多语言
        title = replaceLang(editor, title);
        tpl = replaceLang(editor, tpl);

        // 添加到 DOM
        var $title = $('<li class="w-e-item">' + title + '</li>');
        $tabTitleContainer.append($title);
        var $content = $(tpl);
        $tabContentContainer.append($content);

        // 记录到内存
        $title._index = tabIndex;
        tabTitleArr.push($title);
        tabContentArr.push($content);

        // 设置 active 项
        if (tabIndex === 0) {
          $title._active = true;
          $title.addClass('w-e-active');
        } else {
          $content.hide();
        }

        // 绑定 tab 的事件
        $title.on('click', function (e) {
          if ($title._active) {
            return;
          }
          // 隐藏所有的 tab
          tabTitleArr.forEach(function ($title) {
            $title._active = false;
            $title.removeClass('w-e-active');
          });
          tabContentArr.forEach(function ($content) {
            $content.hide();
          });

          // 显示当前的 tab
          $title._active = true;
          $title.addClass('w-e-active');
          $content.show();
        });
      });

      // 绑定关闭事件
      $container.on('click', function (e) {
        // 点击时阻止冒泡
        e.stopPropagation();
      });
      $body.on('click', function (e) {
        _this.hide();
      });

      // 添加到 DOM
      $textContainerElem.append($container);

      // 绑定 opt 的事件，只有添加到 DOM 之后才能绑定成功
      tabs.forEach(function (tab, index) {
        if (!tab) {
          return;
        }
        var events = tab.events || [];
        events.forEach(function (event) {
          var selector = event.selector;
          var type = event.type;
          var fn = event.fn || emptyFn;
          var $content = tabContentArr[index];
          $content.find(selector).on(type, function (e) {
            e.stopPropagation();
            var needToHide = fn(e);
            // 执行完事件之后，是否要关闭 panel
            if (needToHide) {
              _this.hide();
            }
          });
        });
      });

      // focus 第一个 elem
      var $inputs = $container.find('input[type=text],textarea');
      if ($inputs.length) {
        $inputs.get(0).focus();
      }

      // 添加到属性
      this.$container = $container;

      // 隐藏其他 panel
      this._hideOtherPanels();
      // 记录该 menu 已经创建了 panel
      _isCreatedPanelMenus.push(menu);
    },

    // 隐藏（移除DOM）
    hide: function hide() {
      var menu = this.menu;
      var $container = this.$container;
      if ($container) {
        $container.remove();
      }

      // 将该 menu 记录中移除
      _isCreatedPanelMenus = _isCreatedPanelMenus.filter(function (item) {
        if (item === menu) {
          return false;
        } else {
          return true;
        }
      });
    },

    // 一个 panel 展示时，隐藏其他 panel
    _hideOtherPanels: function _hideOtherPanels() {
      if (!_isCreatedPanelMenus.length) {
        return;
      }
      _isCreatedPanelMenus.forEach(function (menu) {
        var panel = menu.panel || {};
        if (panel.hide) {
          panel.hide();
        }
      });
    }
  };

  /*
    menu - link
*/

// 构造函数
  function Link(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-link"></i></div>');
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Link.prototype = {
    constructor: Link,

    // 点击事件
    onClick: function onClick(e) {
      var editor = this.editor;
      var $linkelem = void 0;

      if (this._active) {
        // 当前选区在链接里面
        $linkelem = editor.selection.getSelectionContainerElem();
        if (!$linkelem) {
          return;
        }
        // 将该元素都包含在选取之内，以便后面整体替换
        editor.selection.createRangeByElem($linkelem);
        editor.selection.restoreSelection();
        // 显示 panel
        this._createPanel($linkelem.text(), $linkelem.attr('href'));
      } else {
        // 当前选区不在链接里面
        if (editor.selection.isSelectionEmpty()) {
          // 选区是空的，未选中内容
          this._createPanel('', '');
        } else {
          // 选中内容了
          this._createPanel(editor.selection.getSelectionText(), '');
        }
      }
    },

    // 创建 panel
    _createPanel: function _createPanel(text, link) {
      var _this = this;

      // panel 中需要用到的id
      var inputLinkId = getRandom('input-link');
      var inputTextId = getRandom('input-text');
      var btnOkId = getRandom('btn-ok');
      var btnDelId = getRandom('btn-del');

      // 是否显示“删除链接”
      var delBtnDisplay = this._active ? 'inline-block' : 'none';

      // 初始化并显示 panel
      var panel = new Panel(this, {
        width: 300,
        // panel 中可包含多个 tab
        tabs: [{
          // tab 的标题
          title: '链接',
          // 模板
          tpl: '<div>\n                            <input id="' + inputTextId + '" type="text" class="block" value="' + text + '" placeholder="\u94FE\u63A5\u6587\u5B57"/></td>\n                            <input id="' + inputLinkId + '" type="text" class="block" value="' + link + '" placeholder="http://..."/></td>\n                            <div class="w-e-button-container">\n                                <button id="' + btnOkId + '" class="right">\u63D2\u5165</button>\n                                <button id="' + btnDelId + '" class="gray right" style="display:' + delBtnDisplay + '">\u5220\u9664\u94FE\u63A5</button>\n                            </div>\n                        </div>',
          // 事件绑定
          events: [
            // 插入链接
            {
              selector: '#' + btnOkId,
              type: 'click',
              fn: function fn() {
                // 执行插入链接
                var $link = $('#' + inputLinkId);
                var $text = $('#' + inputTextId);
                var link = $link.val();
                var text = $text.val();
                _this._insertLink(text, link);

                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true;
              }
            },
            // 删除链接
            {
              selector: '#' + btnDelId,
              type: 'click',
              fn: function fn() {
                // 执行删除链接
                _this._delLink();

                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true;
              }
            }]
        } // tab end
        ] // tabs end
      });

      // 显示 panel
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    // 删除当前链接
    _delLink: function _delLink() {
      if (!this._active) {
        return;
      }
      var editor = this.editor;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      var selectionText = editor.selection.getSelectionText();
      editor.cmd.do('insertHTML', '<span>' + selectionText + '</span>');
    },

    // 插入链接
    _insertLink: function _insertLink(text, link) {
      var editor = this.editor;
      var config = editor.config;
      var linkCheck = config.linkCheck;
      var checkResult = true; // 默认为 true
      if (linkCheck && typeof linkCheck === 'function') {
        checkResult = linkCheck(text, link);
      }
      if (checkResult === true) {
        editor.cmd.do('insertHTML', '<a href="' + link + '" target="_blank">' + text + '</a>');
      } else {
        alert(checkResult);
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      if ($selectionELem.getNodeName() === 'A') {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    italic-menu
*/

// 构造函数
  function Italic(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-italic"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Italic.prototype = {
    constructor: Italic,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里

      var editor = this.editor;
      var isSeleEmpty = editor.selection.isSelectionEmpty();

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange();
      }

      // 执行 italic 命令
      editor.cmd.do('italic');

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange();
        editor.selection.restoreSelection();
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor.cmd.queryCommandState('italic')) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    redo-menu
*/

// 构造函数
  function Redo(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-redo"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Redo.prototype = {
    constructor: Redo,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里

      var editor = this.editor;

      // 执行 redo 命令
      editor.cmd.do('redo');
    }
  };

  /*
    strikeThrough-menu
*/

// 构造函数
  function StrikeThrough(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-strikethrough"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  StrikeThrough.prototype = {
    constructor: StrikeThrough,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里

      var editor = this.editor;
      var isSeleEmpty = editor.selection.isSelectionEmpty();

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange();
      }

      // 执行 strikeThrough 命令
      editor.cmd.do('strikeThrough');

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange();
        editor.selection.restoreSelection();
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor.cmd.queryCommandState('strikeThrough')) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    underline-menu
*/

// 构造函数
  function Underline(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-underline"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Underline.prototype = {
    constructor: Underline,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里

      var editor = this.editor;
      var isSeleEmpty = editor.selection.isSelectionEmpty();

      if (isSeleEmpty) {
        // 选区是空的，插入并选中一个“空白”
        editor.selection.createEmptyRange();
      }

      // 执行 underline 命令
      editor.cmd.do('underline');

      if (isSeleEmpty) {
        // 需要将选取折叠起来
        editor.selection.collapseRange();
        editor.selection.restoreSelection();
      }
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor.cmd.queryCommandState('underline')) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    undo-menu
*/

// 构造函数
  function Undo(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-undo"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Undo.prototype = {
    constructor: Undo,

    // 点击事件
    onClick: function onClick(e) {
      // 点击菜单将触发这里

      var editor = this.editor;

      // 执行 undo 命令
      editor.cmd.do('undo');
    }
  };

  /*
    menu - list
*/

// 构造函数
  function List(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-list2"></i></div>');
    this.type = 'droplist';

    // 当前是否 active 状态
    this._active = false;

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 120,
      $title: $('<p>设置列表</p>'),
      type: 'list', // droplist 以列表形式展示
      list: [{
        $elem: $('<span><i class="w-e-icon-list-numbered"></i> 有序列表</span>'),
        value: 'insertOrderedList'
      }, {$elem: $('<span><i class="w-e-icon-list2"></i> 无序列表</span>'), value: 'insertUnorderedList'}],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 List 对象
        _this._command(value);
      }
    });
  }

// 原型
  List.prototype = {
    constructor: List,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor;
      var $textElem = editor.$textElem;
      editor.selection.restoreSelection();
      if (editor.cmd.queryCommandState(value)) {
        return;
      }
      editor.cmd.do(value);

      // 验证列表是否被包裹在 <p> 之内
      var $selectionElem = editor.selection.getSelectionContainerElem();
      if ($selectionElem.getNodeName() === 'LI') {
        $selectionElem = $selectionElem.parent();
      }
      if (/^ol|ul$/i.test($selectionElem.getNodeName()) === false) {
        return;
      }
      if ($selectionElem.equal($textElem)) {
        // 证明是顶级标签，没有被 <p> 包裹
        return;
      }
      var $parent = $selectionElem.parent();
      if ($parent.equal($textElem)) {
        // $parent 是顶级标签，不能删除
        return;
      }

      $selectionElem.insertAfter($parent);
      $parent.remove();
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor.cmd.queryCommandState('insertUnOrderedList') || editor.cmd.queryCommandState('insertOrderedList')) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    menu - justify
*/

// 构造函数
  function Justify(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-paragraph-left"></i></div>');
    this.type = 'droplist';

    // 当前是否 active 状态
    this._active = false;

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 100,
      $title: $('<p>对齐方式</p>'),
      type: 'list', // droplist 以列表形式展示
      list: [{
        $elem: $('<span><i class="w-e-icon-paragraph-left"></i> 靠左</span>'),
        value: 'justifyLeft'
      }, {
        $elem: $('<span><i class="w-e-icon-paragraph-center"></i> 居中</span>'),
        value: 'justifyCenter'
      }, {$elem: $('<span><i class="w-e-icon-paragraph-right"></i> 靠右</span>'), value: 'justifyRight'}],
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 List 对象
        _this._command(value);
      }
    });
  }

// 原型
  Justify.prototype = {
    constructor: Justify,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor;
      editor.cmd.do(value);
    }
  };

  /*
    menu - Forecolor
*/

// 构造函数
  function ForeColor(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-pencil2"></i></div>');
    this.type = 'droplist';

    // 获取配置的颜色
    var config = editor.config;
    var colors = config.colors || [];

    // 当前是否 active 状态
    this._active = false;

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 120,
      $title: $('<p>文字颜色</p>'),
      type: 'inline-block', // droplist 内容以 block 形式展示
      list: colors.map(function (color) {
        return {$elem: $('<i style="color:' + color + ';" class="w-e-icon-pencil2"></i>'), value: color};
      }),
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 ForeColor 对象
        _this._command(value);
      }
    });
  }

// 原型
  ForeColor.prototype = {
    constructor: ForeColor,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor;
      editor.cmd.do('foreColor', value);
    }
  };

  /*
    menu - BackColor
*/

// 构造函数
  function BackColor(editor) {
    var _this = this;

    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-paint-brush"></i></div>');
    this.type = 'droplist';

    // 获取配置的颜色
    var config = editor.config;
    var colors = config.colors || [];

    // 当前是否 active 状态
    this._active = false;

    // 初始化 droplist
    this.droplist = new DropList(this, {
      width: 120,
      $title: $('<p>背景色</p>'),
      type: 'inline-block', // droplist 内容以 block 形式展示
      list: colors.map(function (color) {
        return {$elem: $('<i style="color:' + color + ';" class="w-e-icon-paint-brush"></i>'), value: color};
      }),
      onClick: function onClick(value) {
        // 注意 this 是指向当前的 BackColor 对象
        _this._command(value);
      }
    });
  }

// 原型
  BackColor.prototype = {
    constructor: BackColor,

    // 执行命令
    _command: function _command(value) {
      var editor = this.editor;
      editor.cmd.do('backColor', value);
    }
  };

  /*
    menu - quote
*/

// 构造函数
  function Quote(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-quotes-left"></i>\n        </div>');
    this.type = 'click';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Quote.prototype = {
    constructor: Quote,

    onClick: function onClick(e) {
      var editor = this.editor;
      var $selectionElem = editor.selection.getSelectionContainerElem();
      var nodeName = $selectionElem.getNodeName();

      if (!UA.isIE()) {
        if (nodeName === 'BLOCKQUOTE') {
          // 撤销 quote
          editor.cmd.do('formatBlock', '<P>');
        } else {
          // 转换为 quote
          editor.cmd.do('formatBlock', '<BLOCKQUOTE>');
        }
        return;
      }

      // IE 中不支持 formatBlock <BLOCKQUOTE> ，要用其他方式兼容
      var content = void 0,
        $targetELem = void 0;
      if (nodeName === 'P') {
        // 将 P 转换为 quote
        content = $selectionElem.text();
        $targetELem = $('<blockquote>' + content + '</blockquote>');
        $targetELem.insertAfter($selectionElem);
        $selectionElem.remove();
        return;
      }
      if (nodeName === 'BLOCKQUOTE') {
        // 撤销 quote
        content = $selectionElem.text();
        $targetELem = $('<p>' + content + '</p>');
        $targetELem.insertAfter($selectionElem);
        $selectionElem.remove();
      }
    },

    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      var reg = /^BLOCKQUOTE$/i;
      var cmdValue = editor.cmd.queryCommandValue('formatBlock');
      if (reg.test(cmdValue)) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    menu - code
*/

// 构造函数
  function Code(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-terminal"></i>\n        </div>');
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Code.prototype = {
    constructor: Code,

    onClick: function onClick(e) {
      var editor = this.editor;
      var $startElem = editor.selection.getSelectionStartElem();
      var $endElem = editor.selection.getSelectionEndElem();
      var isSeleEmpty = editor.selection.isSelectionEmpty();
      var selectionText = editor.selection.getSelectionText();
      var $code = void 0;

      if (!$startElem.equal($endElem)) {
        // 跨元素选择，不做处理
        editor.selection.restoreSelection();
        return;
      }
      if (!isSeleEmpty) {
        // 选取不是空，用 <code> 包裹即可
        $code = $('<code>' + selectionText + '</code>');
        editor.cmd.do('insertElem', $code);
        editor.selection.createRangeByElem($code, false);
        editor.selection.restoreSelection();
        return;
      }

      // 选取是空，且没有夸元素选择，则插入 <pre><code></code></prev>
      if (this._active) {
        // 选中状态，将编辑内容
        this._createPanel($startElem.html());
      } else {
        // 未选中状态，将创建内容
        this._createPanel();
      }
    },

    _createPanel: function _createPanel(value) {
      var _this = this;

      // value - 要编辑的内容
      value = value || '';
      var type = !value ? 'new' : 'edit';
      var textId = getRandom('texxt');
      var btnId = getRandom('btn');

      var panel = new Panel(this, {
        width: 500,
        // 一个 Panel 包含多个 tab
        tabs: [{
          // 标题
          title: '插入代码',
          // 模板
          tpl: '<div>\n                        <textarea id="' + textId + '" style="height:145px;;">' + value + '</textarea>\n                        <div class="w-e-button-container">\n                            <button id="' + btnId + '" class="right">\u63D2\u5165</button>\n                        </div>\n                    <div>',
          // 事件绑定
          events: [
            // 插入代码
            {
              selector: '#' + btnId,
              type: 'click',
              fn: function fn() {
                var $text = $('#' + textId);
                var text = $text.val() || $text.html();
                text = replaceHtmlSymbol(text);
                if (type === 'new') {
                  // 新插入
                  _this._insertCode(text);
                } else {
                  // 编辑更新
                  _this._updateCode(text);
                }

                // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
                return true;
              }
            }]
        } // first tab end
        ] // tabs end
      }); // new Panel end

      // 显示 panel
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    // 插入代码
    _insertCode: function _insertCode(value) {
      var editor = this.editor;
      editor.cmd.do('insertHTML', '<pre><code>' + value + '</code></pre><p><br></p>');
    },

    // 更新代码
    _updateCode: function _updateCode(value) {
      var editor = this.editor;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      $selectionELem.html(value);
      editor.selection.restoreSelection();
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      var $parentElem = $selectionELem.parent();
      if ($selectionELem.getNodeName() === 'CODE' && $parentElem.getNodeName() === 'PRE') {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    menu - emoticon
*/

// 构造函数
  function Emoticon(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu">\n            <i class="w-e-icon-happy"></i>\n        </div>');
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Emoticon.prototype = {
    constructor: Emoticon,

    onClick: function onClick() {
      this._createPanel();
    },

    _createPanel: function _createPanel() {
      var _this = this;

      var editor = this.editor;
      var config = editor.config;
      // 获取表情配置
      var emotions = config.emotions || [];

      // 创建表情 dropPanel 的配置
      var tabConfig = [];
      emotions.forEach(function (emotData) {
        var emotType = emotData.type;
        var content = emotData.content || [];

        // 这一组表情最终拼接出来的 html
        var faceHtml = '';

        // emoji 表情
        if (emotType === 'emoji') {
          content.forEach(function (item) {
            if (item) {
              faceHtml += '<span class="w-e-item">' + item + '</span>';
            }
          });
        }
        // 图片表情
        if (emotType === 'image') {
          content.forEach(function (item) {
            var src = item.src;
            var alt = item.alt;
            if (src) {
              // 加一个 data-w-e 属性，点击图片的时候不再提示编辑图片
              faceHtml += '<span class="w-e-item"><img src="' + src + '" alt="' + alt + '" data-w-e="1"/></span>';
            }
          });
        }

        tabConfig.push({
          title: emotData.title,
          tpl: '<div class="w-e-emoticon-container">' + faceHtml + '</div>',
          events: [{
            selector: 'span.w-e-item',
            type: 'click',
            fn: function fn(e) {
              var target = e.target;
              var $target = $(target);
              var nodeName = $target.getNodeName();

              var insertHtml = void 0;
              if (nodeName === 'IMG') {
                // 插入图片
                insertHtml = $target.parent().html();
              } else {
                // 插入 emoji
                insertHtml = '<span>' + $target.html() + '</span>';
              }

              _this._insert(insertHtml);
              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }]
        });
      });

      var panel = new Panel(this, {
        width: 300,
        height: 200,
        // 一个 Panel 包含多个 tab
        tabs: tabConfig
      });

      // 显示 panel
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    // 插入表情
    _insert: function _insert(emotHtml) {
      var editor = this.editor;
      editor.cmd.do('insertHTML', emotHtml);
    }
  };

  /*
    menu - table
*/

// 构造函数
  function Table(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-table2"></i></div>');
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Table.prototype = {
    constructor: Table,

    onClick: function onClick() {
      if (this._active) {
        // 编辑现有表格
        this._createEditPanel();
      } else {
        // 插入新表格
        this._createInsertPanel();
      }
    },

    // 创建插入新表格的 panel
    _createInsertPanel: function _createInsertPanel() {
      var _this = this;

      // 用到的 id
      var btnInsertId = getRandom('btn');
      var textRowNum = getRandom('row');
      var textColNum = getRandom('col');

      var panel = new Panel(this, {
        width: 250,
        // panel 包含多个 tab
        tabs: [{
          // 标题
          title: '插入表格',
          // 模板
          tpl: '<div>\n                        <p style="text-align:left; padding:5px 0;">\n                            \u521B\u5EFA\n                            <input id="' + textRowNum + '" type="text" value="5" style="width:40px;text-align:center;"/>\n                            \u884C\n                            <input id="' + textColNum + '" type="text" value="5" style="width:40px;text-align:center;"/>\n                            \u5217\u7684\u8868\u683C\n                        </p>\n                        <div class="w-e-button-container">\n                            <button id="' + btnInsertId + '" class="right">\u63D2\u5165</button>\n                        </div>\n                    </div>',
          // 事件绑定
          events: [{
            // 点击按钮，插入表格
            selector: '#' + btnInsertId,
            type: 'click',
            fn: function fn() {
              var rowNum = parseInt($('#' + textRowNum).val());
              var colNum = parseInt($('#' + textColNum).val());

              if (rowNum && colNum && rowNum > 0 && colNum > 0) {
                // form 数据有效
                _this._insert(rowNum, colNum);
              }

              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }]
        } // first tab end
        ] // tabs end
      }); // panel end

      // 展示 panel
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    // 插入表格
    _insert: function _insert(rowNum, colNum) {
      // 拼接 table 模板
      var r = void 0,
        c = void 0;
      var html = '<div class="w-e-text"><table border="0" width="100%" cellpadding="0" cellspacing="0">';
      for (r = 0; r < rowNum; r++) {
        html += '<tr>';
        if (r === 0) {
          for (c = 0; c < colNum; c++) {
            html += '<th>&nbsp;</th>';
          }
        } else {
          for (c = 0; c < colNum; c++) {
            html += '<td>&nbsp;</td>';
          }
        }
        html += '</tr>';
      }
      html += '</table></div><p><br></p>';

      // 执行命令
      var editor = this.editor;
      editor.cmd.do('insertHTML', html);

      // 防止 firefox 下出现 resize 的控制点
      editor.cmd.do('enableObjectResizing', false);
      editor.cmd.do('enableInlineTableEditing', false);
    },

    // 创建编辑表格的 panel
    _createEditPanel: function _createEditPanel() {
      var _this2 = this;

      // 可用的 id
      var addRowBtnId = getRandom('add-row');
      var addColBtnId = getRandom('add-col');
      var delRowBtnId = getRandom('del-row');
      var delColBtnId = getRandom('del-col');
      var delTableBtnId = getRandom('del-table');

      // 创建 panel 对象
      var panel = new Panel(this, {
        width: 320,
        // panel 包含多个 tab
        tabs: [{
          // 标题
          title: '编辑表格',
          // 模板
          tpl: '<div>\n                        <div class="w-e-button-container" style="border-bottom:1px solid #f1f1f1;padding-bottom:5px;margin-bottom:5px;">\n                            <button id="' + addRowBtnId + '" class="left">\u589E\u52A0\u884C</button>\n                            <button id="' + delRowBtnId + '" class="red left">\u5220\u9664\u884C</button>\n                            <button id="' + addColBtnId + '" class="left">\u589E\u52A0\u5217</button>\n                            <button id="' + delColBtnId + '" class="red left">\u5220\u9664\u5217</button>\n                        </div>\n                        <div class="w-e-button-container">\n                            <button id="' + delTableBtnId + '" class="gray left">\u5220\u9664\u8868\u683C</button>\n                        </dv>\n                    </div>',
          // 事件绑定
          events: [{
            // 增加行
            selector: '#' + addRowBtnId,
            type: 'click',
            fn: function fn() {
              _this2._addRow();
              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }, {
            // 增加列
            selector: '#' + addColBtnId,
            type: 'click',
            fn: function fn() {
              _this2._addCol();
              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }, {
            // 删除行
            selector: '#' + delRowBtnId,
            type: 'click',
            fn: function fn() {
              _this2._delRow();
              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }, {
            // 删除列
            selector: '#' + delColBtnId,
            type: 'click',
            fn: function fn() {
              _this2._delCol();
              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }, {
            // 删除表格
            selector: '#' + delTableBtnId,
            type: 'click',
            fn: function fn() {
              _this2._delTable();
              // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
              return true;
            }
          }]
        }]
      });
      // 显示 panel
      panel.show();
    },

    // 获取选中的单元格的位置信息
    _getLocationData: function _getLocationData() {
      var result = {};
      var editor = this.editor;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      var nodeName = $selectionELem.getNodeName();
      if (nodeName !== 'TD' && nodeName !== 'TH') {
        return;
      }

      // 获取 td index
      var $tr = $selectionELem.parent();
      var $tds = $tr.children();
      var tdLength = $tds.length;
      $tds.forEach(function (td, index) {
        if (td === $selectionELem[0]) {
          // 记录并跳出循环
          result.td = {
            index: index,
            elem: td,
            length: tdLength
          };
          return false;
        }
      });

      // 获取 tr index
      var $tbody = $tr.parent();
      var $trs = $tbody.children();
      var trLength = $trs.length;
      $trs.forEach(function (tr, index) {
        if (tr === $tr[0]) {
          // 记录并跳出循环
          result.tr = {
            index: index,
            elem: tr,
            length: trLength
          };
          return false;
        }
      });

      // 返回结果
      return result;
    },

    // 增加行
    _addRow: function _addRow() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData();
      if (!locationData) {
        return;
      }
      var trData = locationData.tr;
      var $currentTr = $(trData.elem);
      var tdData = locationData.td;
      var tdLength = tdData.length;

      // 拼接即将插入的字符串
      var newTr = document.createElement('tr');
      var tpl = '',
        i = void 0;
      for (i = 0; i < tdLength; i++) {
        tpl += '<td>&nbsp;</td>';
      }
      newTr.innerHTML = tpl;
      // 插入
      $(newTr).insertAfter($currentTr);
      var editor = this.editor;
      editor.cmd.do('insertHTML', '');
    },

    // 增加列
    _addCol: function _addCol() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData();
      if (!locationData) {
        return;
      }
      var trData = locationData.tr;
      var tdData = locationData.td;
      var tdIndex = tdData.index;
      var $currentTr = $(trData.elem);
      var $trParent = $currentTr.parent();
      var $trs = $trParent.children();

      // 遍历所有行
      $trs.forEach(function (tr) {
        var $tr = $(tr);
        var $tds = $tr.children();
        var $currentTd = $tds.get(tdIndex);
        var name = $currentTd.getNodeName().toLowerCase();

        // new 一个 td，并插入
        var newTd = document.createElement(name);
        $(newTd).insertAfter($currentTd);
      });
      var editor = this.editor;
      editor.cmd.do('insertHTML', '');
    },

    // 删除行
    _delRow: function _delRow() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData();
      if (!locationData) {
        return;
      }
      var trData = locationData.tr;
      var $currentTr = $(trData.elem);
      $currentTr.remove();
      var editor = this.editor;
      editor.cmd.do('insertHTML', '');
    },

    // 删除列
    _delCol: function _delCol() {
      // 获取当前单元格的位置信息
      var locationData = this._getLocationData();
      if (!locationData) {
        return;
      }
      var trData = locationData.tr;
      var tdData = locationData.td;
      var tdIndex = tdData.index;
      var $currentTr = $(trData.elem);
      var $trParent = $currentTr.parent();
      var $trs = $trParent.children();

      // 遍历所有行
      $trs.forEach(function (tr) {
        var $tr = $(tr);
        var $tds = $tr.children();
        var $currentTd = $tds.get(tdIndex);
        // 删除
        $currentTd.remove();
      });
      var editor = this.editor;
      editor.cmd.do('insertHTML', '');
    },

    // 删除表格
    _delTable: function _delTable() {
      var editor = this.editor;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      var $table = $selectionELem.parentUntil('table');
      if (!$table) {
        return;
      }
      $table.remove();
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      var $selectionELem = editor.selection.getSelectionContainerElem();
      if (!$selectionELem) {
        return;
      }
      var nodeName = $selectionELem.getNodeName();
      if (nodeName === 'TD' || nodeName === 'TH') {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    menu - video
*/

// 构造函数
  function Video(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-play"></i></div>');
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Video.prototype = {

    constructor: Video,

    onClick: function onClick() {
      this._createInsertPanel();
    },

    _createInsertPanel: function _createInsertPanel() {
      var editor = this.editor;
      var uploadVideo = editor.uploadVideo;
      var config = editor.config;
      // id
      var upTriggerId = getRandom('up-trigger');
      var upFileId = getRandom('up-file');

      // tabs 的配置
      var tabsConfig = [
        {
          title: '上传 video',
          tpl: '<div class="w-e-up-img-container">\n                    ' +
            '<div id="' + upTriggerId + '" class="w-e-up-btn">\n                        ' +
            '<i class="w-e-icon-upload2"></i>\n                    </div>\n                    ' +
            '<div style="display:none;">\n                        <input id="' + upFileId + '" type="file" multiple="multiple" accept="audio/mp4, video/mp4"/>\n                    ' +
            '</div>\n                            </div>',
          events: [{
            // 触发选择视频
            selector: '#' + upTriggerId,
            type: 'click',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (fileElem) {
                fileElem.click();
              } else {
                // 返回 true 可关闭 panel
                return true;
              }
            }
          }, {
            // 选择视频完毕
            selector: '#' + upFileId,
            type: 'change',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (!fileElem) {
                // 返回 true 可关闭 panel
                return true;
              }

              // 获取选中的 file 对象列表
              var fileList = fileElem.files;
              if (fileList.length) {
                uploadVideo.uploadVideo(fileList);
              }

              // 返回 true 可关闭 panel
              return true;
            }
          }]
        }
      ]; // tabs end

      // 判断 tabs 的显示
      var tabsConfigResult = [];
      tabsConfigResult.push(tabsConfig[0]);

      // 创建 panel 并显示
      var panel = new Panel(this, {
        width: 300,
        tabs: tabsConfigResult
      });
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor._selectedImg) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }

    // constructor: Video,
    //
    // onClick: function onClick() {
    //     this._createPanel();
    // },
    //
    // _createPanel: function _createPanel() {
    //     var _this = this;
    //
    //     // 创建 id
    //     var textValId = getRandom('text-val');
    //     var btnId = getRandom('btn');
    //
    //     // 创建 panel
    //     var panel = new Panel(this, {
    //         width: 350,
    //         // 一个 panel 多个 tab
    //         tabs: [{
    //             // 标题
    //             title: '插入视频',
    //             // 模板
    //             tpl: '<div>\n                        <input id="' + textValId + '" type="text" class="block" placeholder="\u683C\u5F0F\u5982\uFF1A<iframe src=... ></iframe>"/>\n                        <div class="w-e-button-container">\n                            <button id="' + btnId + '" class="right">\u63D2\u5165</button>\n                        </div>\n                    </div>',
    //             // 事件绑定
    //             events: [{
    //                 selector: '#' + btnId,
    //                 type: 'click',
    //                 fn: function fn() {
    //                     var $text = $('#' + textValId);
    //                     var val = $text.val().trim();
    //
    //                     // 测试用视频地址
    //                     // <iframe height=498 width=510 src='http://player.youku.com/embed/XMjcwMzc3MzM3Mg==' frameborder=0 'allowfullscreen'></iframe>
    //
    //                     if (val) {
    //                         // 插入视频
    //                         _this._insert(val);
    //                     }
    //
    //                     // 返回 true，表示该事件执行完之后，panel 要关闭。否则 panel 不会关闭
    //                     return true;
    //                 }
    //             }]
    //         } // first tab end
    //         ] // tabs end
    //     }); // panel end
    //
    //     // 显示 panel
    //     panel.show();
    //
    //     // 记录属性
    //     this.panel = panel;
    // },
    //
    // // 插入视频
    // _insert: function _insert(val) {
    //     var editor = this.editor;
    //     editor.cmd.do('insertHTML', val + '<p><br></p>');
    // }
  };

  /**
   * 配置格式刷

  function BrushFormat(editor) {
    this.editor = editor;
    this.$elem = $('<div class="w-e-menu"><i class="w-e-icon-play"></i></div>');
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

  BrushFormat.prototype = {

    constructor: BrushFormat,

    //这是格式刷对象里面的onClick方法
    onClick: function (e, type) {
      const editor = this.editor
      const isSeleEmpty = editor.selection.isSelectionEmpty()
      if (!isSeleEmpty) {
        return
      }

      if (this._active) {
        this._active = false
        editor._brush = false
        editor._dblBrush = false
        this.$elem.removeClass('w-e-active')
        editor.$textContainerElem.removeClass('brush')
        return
      }
      this._active = true
      editor._brush = true
      editor._dblBrush = type === 'dblclick' ? true : false
      this.$elem.addClass('w-e-active')
      editor.$textContainerElem.addClass('brush')
      let containerEle = editor.selection.getSelectionContainerElem()
      let style = containerEle.css()
      while (!containerEle.equal(editor.$textElem[0])) {
        containerEle = containerEle.parent()
        if (containerEle.parent().equal(editor.$textElem[0]) && !containerEle.equal(editor.$textElem[0])) {
          style = Object.assign({}, style, {wrap: containerEle.css()})
        }
        if (!containerEle.parent().equal(editor.$textElem[0]) && !containerEle.equal(editor.$textElem[0])) {
          style = Object.assign({}, style, containerEle.css())
        }
      }

      editor._style = style;
      //$textElem是指编辑器可编辑区域（详情请查看源码）
      $textElem.on('mouseup', e => {
//这是wangEditor里面事实保存选区的事件
        saveRange()
        $textElem.off('mouseleave', saveRange)
        if (editor._brush) {

//将储存的style转换成字符串形式
          let text
          let style=''
          let wrapStyle=''
          for (const key in editor._style) {
            if (editor._style.hasOwnProperty(key)) {
              const element = editor._style[key];
              if (key==='wrap') {
                for (const Wkey in element) {
                  if (element.hasOwnProperty(Wkey)) {
                    const Welement = element[Wkey];
                    wrapStyle+=`${Wkey}:${Welement};`
                  }
                }
              }else{
                style+=`${key}:${element};`
              }
            }
          }


//如果没有刷到内容只是点击了一下编辑框
//直接获取当前选取的顶级p标签，将wrapStyle赋予p标签，同时设置html的内容
          if (editor.selection.isSelectionEmpty()) {
            // 如果没有选中任何内容
            let containerElem = editor.selection.getSelectionContainerElem().closest('p')
            editor.selection.createRangeByElem(containerElem)
            editor.selection.restoreSelection()
            text = editor.selection.getSelectionText()
            if (!text.trim()==='') {
              containerElem[0].setAttribute('style', wrapStyle);
              containerElem.html('<span style="' + style + '">' + text + '</span>');
            }
            // 折叠选区
            editor.selection.collapseRange()
          } else {
//如果刷到了内容那么就有两种情况
//1.如果只刷了一行
//2.如果刷了多行
            let range = editor.selection.getRange()
            let containerElem = editor.selection.getSelectionContainerElem()
            if (!containerElem.equal(editor.$textElem[0])) {
// 如果只刷了一行
//跟上面的处理方式相似
              text = editor.selection.getSelectionText()
              containerElem.closest('p')[0].setAttribute('style', wrapStyle)
              editor.cmd.do('insertHTML', `<span style="${style}">${text}</span>`)
            } else {
// 如果刷了多行
//1.首先起始部分的选区：从起始位置开始到整行结束
//2.末尾部分选区：从整行起始位置开始到选区末尾结束（请看后面的图解）
//3.处理方式：先将选去里面的节点存进数组，然后遍历数组，根据节点创建选区
//如果是首节点,使用range.setStart()方法
//如果是中间节点，则不处理
//如果是末尾节点使用range.setEnd()方法

              let elements = []
              let startElem = range.startContainer
              let startElemCon = $(startElem).closest('p')
              let endElem = range.endContainer
              let endElemCon = $(endElem).closest('p')
              elements.push({
                type: 'start',
                elem: startElem,
                offset: range.startOffset,
                containerType: range.startContainer.nodeType === 1 ? 'NODE' : 'TEXT',
                container: startElemCon
              })
              while (!startElemCon.next().equal(endElemCon)) {
                startElemCon = startElemCon.next()
                elements.push({
                  type: 'mid',
                  elem: startElemCon,
                  container: startElemCon
                })
              }
              elements.push({
                type: 'end',
                elem: endElem,
                offset: range.endOffset,
                containerType: range.startContainer.nodeType === 1 ? 'NODE' : 'TEXT',
                container: endElemCon
              })
              elements.forEach(element => {
                let container = $(element.container)
                let range = editor.selection.createRangeByElem(container, null, true)
                if (element.type === 'start') {
                  range.setStart(element.elem, element.offset)
                  editor.selection.saveRange(range)
                  editor.selection.restoreSelection()
                  text = editor.selection.getSelectionText()
                  container[0].setAttribute('style', wrapStyle)
                  editor.cmd.do('insertHTML', `<span style="${style}">${text}</span>`)
                } else if (element.type === 'mid') {
                  text = range.toString()
                  container[0].setAttribute('style', wrapStyle)
                  editor.cmd.do('insertHTML', `<span style="${style}">${text}</span>`)
                } else if (element.type === 'end') {
                  range.setEnd(element.elem, element.offset)
                  editor.selection.saveRange(range)
                  editor.selection.restoreSelection()
                  text = editor.selection.getSelectionText()
                  container[0].setAttribute('style', wrapStyle)
                  editor.cmd.do('insertHTML', `<span style="${style}">${text}</span>`)
                }
              });
            }
          }


//如果不是双击格式刷 那么退出格式刷
          if (!editor._dblBrush) {
            editor._brush=false
            editor.menus.menus.format.$elem.removeClass('w-e-active')
            editor.$textContainerElem.removeClass('brush')
          }
        }
      })
    }
  }
   */
  /*
    menu - img
*/

// 构造函数
  function Image(editor) {
    this.editor = editor;
    var imgMenuId = getRandom('w-e-img');
    this.$elem = $('<div class="w-e-menu" id="' + imgMenuId + '"><i class="w-e-icon-image"></i></div>');
    editor.imgMenuId = imgMenuId;
    this.type = 'panel';

    // 当前是否 active 状态
    this._active = false;
  }

// 原型
  Image.prototype = {
    constructor: Image,

    onClick: function onClick() {
      var editor = this.editor;
      var config = editor.config;
      if (config.qiniu) {
        return;
      }
      if (this._active) {
        this._createEditPanel();
      } else {
        this._createInsertPanel();
      }
    },

    _createEditPanel: function _createEditPanel() {
      var editor = this.editor;

      // id
      var width30 = getRandom('width-30');
      var width50 = getRandom('width-50');
      var width100 = getRandom('width-100');
      var delBtn = getRandom('del-btn');
      var upTriggerId = getRandom('up-trigger');
      var upFileId = getRandom('up-file');
      // tab 配置
      var tabsConfig = [
        {
          title: '上传 video',
          tpl: '<div class="w-e-up-img-container">\n                    ' +
            '<div id="' + upTriggerId + '" class="w-e-up-btn">\n                        ' +
            '<i class="w-e-icon-upload2"></i>\n                    </div>\n                    ' +
            '<div style="display:none;">\n                        <input id="' + upFileId + '" type="file" multiple="multiple" accept="audio/mp4, video/mp4"/>\n                    ' +
            '</div>\n                            </div>',
          events: [{
            // 触发选择视频
            selector: '#' + upTriggerId,
            type: 'click',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (fileElem) {
                fileElem.click();
              } else {
                // 返回 true 可关闭 panel
                return true;
              }
            }
          }, {
            // 选择视频完毕
            selector: '#' + upFileId,
            type: 'change',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (!fileElem) {
                // 返回 true 可关闭 panel
                return true;
              }

              // 获取选中的 file 对象列表
              var fileList = fileElem.files;
              if (fileList.length) {
                uploadVideo.uploadVideo(fileList);
              }

              // 返回 true 可关闭 panel
              return true;
            }
          }]
        }
      ]; // tabs end
      // 判断 tabs 的显示
      var tabsConfigResult = [];
      tabsConfigResult.push(tabsConfig[0]);

      // 创建 panel 并显示
      var panel = new Panel(this, {
        width: 300,
        tabs: tabsConfig
      });
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    _createInsertPanel: function _createInsertPanel() {
      var editor = this.editor;
      var uploadImg = editor.uploadImg;
      var config = editor.config;

      // id
      var upTriggerId = getRandom('up-trigger');
      var upFileId = getRandom('up-file');
      var linkUrlId = getRandom('link-url');
      var linkBtnId = getRandom('link-btn');

      // tabs 的配置
      var tabsConfig = [
        {
          title: '上传 video',
          tpl: '<div class="w-e-up-img-container">\n                    ' +
            '<div id="' + upTriggerId + '" class="w-e-up-btn">\n                        ' +
            '<i class="w-e-icon-upload2"></i>\n                    </div>\n                    ' +
            '<div style="display:none;">\n                        <input id="' + upFileId + '" type="file" multiple="multiple" accept="audio/mp4, video/mp4"/>\n                    ' +
            '</div>\n                            </div>',
          events: [{
            // 触发选择视频
            selector: '#' + upTriggerId,
            type: 'click',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (fileElem) {
                fileElem.click();
              } else {
                // 返回 true 可关闭 panel
                return true;
              }
            }
          }, {
            // 选择视频完毕
            selector: '#' + upFileId,
            type: 'change',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (!fileElem) {
                // 返回 true 可关闭 panel
                return true;
              }

              // 获取选中的 file 对象列表
              var fileList = fileElem.files;
              if (fileList.length) {
                uploadVideo.uploadVideo(fileList);
              }

              // 返回 true 可关闭 panel
              return true;
            }
          }]
        },
        {
          title: '上传图片',
          tpl: '<div class="w-e-up-img-container">\n                    <div id="' + upTriggerId + '" class="w-e-up-btn">\n                        <i class="w-e-icon-upload2"></i>\n                    </div>\n                    <div style="display:none;">\n                        <input id="' + upFileId + '" type="file" multiple="multiple" accept="image/jpg,image/jpeg,image/png,image/gif,image/bmp"/>\n                    </div>\n                </div>',
          events: [{
            // 触发选择图片
            selector: '#' + upTriggerId,
            type: 'click',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (fileElem) {
                fileElem.click();
              } else {
                // 返回 true 可关闭 panel
                return true;
              }
            }
          }, {
            // 选择图片完毕
            selector: '#' + upFileId,
            type: 'change',
            fn: function fn() {
              var $file = $('#' + upFileId);
              var fileElem = $file[0];
              if (!fileElem) {
                // 返回 true 可关闭 panel
                return true;
              }

              // 获取选中的 file 对象列表
              var fileList = fileElem.files;
              if (fileList.length) {
                uploadImg.uploadImg(fileList);
              }

              // 返回 true 可关闭 panel
              return true;
            }
          }]
        }, // first tab end
        {
          title: '网络图片',
          tpl: '<div>\n                    <input id="' + linkUrlId + '" type="text" class="block" placeholder="\u56FE\u7247\u94FE\u63A5"/></td>\n                    <div class="w-e-button-container">\n                        <button id="' + linkBtnId + '" class="right">\u63D2\u5165</button>\n                    </div>\n                </div>',
          events: [{
            selector: '#' + linkBtnId,
            type: 'click',
            fn: function fn() {
              var $linkUrl = $('#' + linkUrlId);
              var url = $linkUrl.val().trim();

              if (url) {
                uploadImg.insertLinkImg(url);
              }

              // 返回 true 表示函数执行结束之后关闭 panel
              return true;
            }
          }]
        } // second tab end
      ]; // tabs end

      // 判断 tabs 的显示
      var tabsConfigResult = [];
      if ((config.uploadImgShowBase64 || config.uploadImgServer || config.customUploadImg) && window.FileReader) {
        // 显示“上传图片”
        tabsConfigResult.push(tabsConfig[1]);
      }
      if (config.showLinkImg) {
        // 显示“网络图片”
        tabsConfigResult.push(tabsConfig[2]);
      }

      // 创建 panel 并显示
      var panel = new Panel(this, {
        width: 300,
        tabs: tabsConfigResult
      });
      panel.show();

      // 记录属性
      this.panel = panel;
    },

    // 试图改变 active 状态
    tryChangeActive: function tryChangeActive(e) {
      var editor = this.editor;
      var $elem = this.$elem;
      if (editor._selectedImg) {
        this._active = true;
        $elem.addClass('w-e-active');
      } else {
        this._active = false;
        $elem.removeClass('w-e-active');
      }
    }
  };

  /*
    所有菜单的汇总
*/

// 存储菜单的构造函数
  var MenuConstructors = {};

  MenuConstructors.bold = Bold;

  MenuConstructors.head = Head;

  MenuConstructors.fontSize = FontSize;

  MenuConstructors.fontName = FontName;

  MenuConstructors.link = Link;

  MenuConstructors.italic = Italic;

  MenuConstructors.redo = Redo;

  MenuConstructors.strikeThrough = StrikeThrough;

  MenuConstructors.underline = Underline;

  MenuConstructors.undo = Undo;

  MenuConstructors.list = List;

  MenuConstructors.justify = Justify;

  MenuConstructors.foreColor = ForeColor;

  MenuConstructors.backColor = BackColor;

  MenuConstructors.quote = Quote;

  MenuConstructors.code = Code;

  MenuConstructors.emoticon = Emoticon;

  MenuConstructors.table = Table;

  MenuConstructors.video = Video;

  MenuConstructors.image = Image;

  /*
    菜单集合
*/

// 构造函数
  function Menus(editor) {
    this.editor = editor;
    this.menus = {};
  }

// 修改原型
  Menus.prototype = {
    constructor: Menus,

    // 初始化菜单
    init: function init() {
      var _this = this;

      var editor = this.editor;
      var config = editor.config || {};
      var configMenus = config.menus || []; // 获取配置中的菜单

      // 根据配置信息，创建菜单
      configMenus.forEach(function (menuKey) {
        var MenuConstructor = MenuConstructors[menuKey];
        if (MenuConstructor && typeof MenuConstructor === 'function') {
          // 创建单个菜单
          _this.menus[menuKey] = new MenuConstructor(editor);
        }
      });

      // 添加到菜单栏
      this._addToToolbar();

      // 绑定事件
      this._bindEvent();
    },

    // 添加到菜单栏
    _addToToolbar: function _addToToolbar() {
      var editor = this.editor;
      var $toolbarElem = editor.$toolbarElem;
      var menus = this.menus;
      var config = editor.config;
      // config.zIndex 是配置的编辑区域的 z-index，菜单的 z-index 得在其基础上 +1
      var zIndex = config.zIndex + 1;
      objForEach(menus, function (key, menu) {
        var $elem = menu.$elem;
        if ($elem) {
          // 设置 z-index
          $elem.css('z-index', zIndex);
          $toolbarElem.append($elem);
        }
      });
    },

    // 绑定菜单 click mouseenter 事件
    _bindEvent: function _bindEvent() {
      var menus = this.menus;
      var editor = this.editor;
      objForEach(menus, function (key, menu) {
        var type = menu.type;
        if (!type) {
          return;
        }
        var $elem = menu.$elem;
        var droplist = menu.droplist;
        var panel = menu.panel;

        // 点击类型，例如 bold
        if (type === 'click' && menu.onClick) {
          $elem.on('click', function (e) {
            if (editor.selection.getRange() == null) {
              return;
            }
            menu.onClick(e);
          });
        }

        // 下拉框，例如 head
        if (type === 'droplist' && droplist) {
          $elem.on('mouseenter', function (e) {
            if (editor.selection.getRange() == null) {
              return;
            }
            // 显示
            droplist.showTimeoutId = setTimeout(function () {
              droplist.show();
            }, 200);
          }).on('mouseleave', function (e) {
            // 隐藏
            droplist.hideTimeoutId = setTimeout(function () {
              droplist.hide();
            }, 0);
          });
        }

        // 弹框类型，例如 link
        if (type === 'panel' && menu.onClick) {
          $elem.on('click', function (e) {
            e.stopPropagation();
            if (editor.selection.getRange() == null) {
              return;
            }
            // 在自定义事件中显示 panel
            menu.onClick(e);
          });
        }
      });
    },

    // 尝试修改菜单状态
    changeActive: function changeActive() {
      var menus = this.menus;
      objForEach(menus, function (key, menu) {
        if (menu.tryChangeActive) {
          setTimeout(function () {
            menu.tryChangeActive();
          }, 100);
        }
      });
    }
  };

  /*
    粘贴信息的处理
*/

// 获取粘贴的纯文本
  function getPasteText(e) {
    var clipboardData = e.clipboardData || e.originalEvent && e.originalEvent.clipboardData;
    var pasteText = void 0;
    if (clipboardData == null) {
      pasteText = window.clipboardData && window.clipboardData.getData('text');
    } else {
      pasteText = clipboardData.getData('text/plain');
    }

    return replaceHtmlSymbol(pasteText);
  }

// 获取粘贴的html
  function getPasteHtml(e, filterStyle, ignoreImg) {
    var clipboardData = e.clipboardData || e.originalEvent && e.originalEvent.clipboardData;
    var pasteText = void 0,
      pasteHtml = void 0;
    if (clipboardData == null) {
      pasteText = window.clipboardData && window.clipboardData.getData('text');
    } else {
      pasteText = clipboardData.getData('text/plain');
      pasteHtml = clipboardData.getData('text/html');
    }
    if (!pasteHtml && pasteText) {
      pasteHtml = '<p>' + replaceHtmlSymbol(pasteText) + '</p>';
    }
    if (!pasteHtml) {
      return;
    }

    // 过滤word中状态过来的无用字符
    var docSplitHtml = pasteHtml.split('</html>');
    if (docSplitHtml.length === 2) {
      pasteHtml = docSplitHtml[0];
    }

    // 过滤无用标签
    pasteHtml = pasteHtml.replace(/<(meta|script|link).+?>/igm, '');
    // 去掉注释
    pasteHtml = pasteHtml.replace(/<!--.*?-->/mg, '');
    // 过滤 data-xxx 属性
    pasteHtml = pasteHtml.replace(/\s?data-.+?=('|").+?('|")/igm, '');

    if (ignoreImg) {
      // 忽略图片
      pasteHtml = pasteHtml.replace(/<img.+?>/igm, '');
    }

    if (filterStyle) {
      // 过滤样式
      pasteHtml = pasteHtml.replace(/\s?(class|style)=('|").*?('|")/igm, '');
    } else {
      // 保留样式
      pasteHtml = pasteHtml.replace(/\s?class=('|").*?('|")/igm, '');
    }

    return pasteHtml;
  }

// 获取粘贴的图片文件
  function getPasteImgs(e) {
    var result = [];
    var txt = getPasteText(e);
    if (txt) {
      // 有文字，就忽略图片
      return result;
    }

    var clipboardData = e.clipboardData || e.originalEvent && e.originalEvent.clipboardData || {};
    var items = clipboardData.items;
    if (!items) {
      return result;
    }

    objForEach(items, function (key, value) {
      var type = value.type;
      if (/image/i.test(type)) {
        result.push(value.getAsFile());
      }
    });

    return result;
  }

  /*
    编辑区域
*/

// 获取一个 elem.childNodes 的 JSON 数据
  function getChildrenJSON($elem) {
    var result = [];
    var $children = $elem.childNodes() || []; // 注意 childNodes() 可以获取文本节点
    $children.forEach(function (curElem) {
      var elemResult = void 0;
      var nodeType = curElem.nodeType;

      // 文本节点
      if (nodeType === 3) {
        elemResult = curElem.textContent;
        elemResult = replaceHtmlSymbol(elemResult);
      }

      // 普通 DOM 节点
      if (nodeType === 1) {
        elemResult = {};

        // tag
        elemResult.tag = curElem.nodeName.toLowerCase();
        // attr
        var attrData = [];
        var attrList = curElem.attributes || {};
        var attrListLength = attrList.length || 0;
        for (var i = 0; i < attrListLength; i++) {
          var attr = attrList[i];
          attrData.push({
            name: attr.name,
            value: attr.value
          });
        }
        elemResult.attrs = attrData;
        // children（递归）
        elemResult.children = getChildrenJSON($(curElem));
      }

      result.push(elemResult);
    });
    return result;
  }

// 构造函数
  function Text(editor) {
    this.editor = editor;
  }

// 修改原型
  Text.prototype = {
    constructor: Text,

    // 初始化
    init: function init() {
      // 绑定事件
      this._bindEvent();
    },

    // 清空内容
    clear: function clear() {
      this.html('<p><br></p>');
    },

    // 获取 设置 html
    html: function html(val) {
      var editor = this.editor;
      var $textElem = editor.$textElem;
      var html = void 0;
      if (val == null) {
        html = $textElem.html();
        // 未选中任何内容的时候点击“加粗”或者“斜体”等按钮，就得需要一个空的占位符 &#8203 ，这里替换掉
        html = html.replace(/\u200b/gm, '');
        return html;
      } else {
        $textElem.html(val);

        // 初始化选取，将光标定位到内容尾部
        editor.initSelection();
      }
    },

    // 获取 JSON
    getJSON: function getJSON() {
      var editor = this.editor;
      var $textElem = editor.$textElem;
      return getChildrenJSON($textElem);
    },

    // 获取 设置 text
    text: function text(val) {
      var editor = this.editor;
      var $textElem = editor.$textElem;
      var text = void 0;
      if (val == null) {
        text = $textElem.text();
        // 未选中任何内容的时候点击“加粗”或者“斜体”等按钮，就得需要一个空的占位符 &#8203 ，这里替换掉
        text = text.replace(/\u200b/gm, '');
        return text;
      } else {
        $textElem.text('<p>' + val + '</p>');

        // 初始化选取，将光标定位到内容尾部
        editor.initSelection();
      }
    },

    // 追加内容
    append: function append(html) {
      var editor = this.editor;
      var $textElem = editor.$textElem;
      $textElem.append($(html));

      // 初始化选取，将光标定位到内容尾部
      editor.initSelection();
    },

    // 绑定事件
    _bindEvent: function _bindEvent() {
      // 实时保存选取
      this._saveRangeRealTime();

      // 按回车建时的特殊处理
      this._enterKeyHandle();

      // 清空时保留 <p><br></p>
      this._clearHandle();

      // 粘贴事件（粘贴文字，粘贴图片）
      this._pasteHandle();

      // tab 特殊处理
      this._tabHandle();

      // img 点击
      this._imgHandle();

      // 拖拽事件
      this._dragHandle();
    },

    // 实时保存选取
    _saveRangeRealTime: function _saveRangeRealTime() {
      var editor = this.editor;
      var $textElem = editor.$textElem;

      // 保存当前的选区
      function saveRange(e) {
        // 随时保存选区
        editor.selection.saveRange();
        // 更新按钮 ative 状态
        editor.menus.changeActive();
      }

      // 按键后保存
      $textElem.on('keyup', saveRange);
      $textElem.on('mousedown', function (e) {
        // mousedown 状态下，鼠标滑动到编辑区域外面，也需要保存选区
        $textElem.on('mouseleave', saveRange);
      });
      $textElem.on('mouseup', function (e) {
        saveRange();
        // 在编辑器区域之内完成点击，取消鼠标滑动到编辑区外面的事件
        $textElem.off('mouseleave', saveRange);
      });
    },

    // 按回车键时的特殊处理
    _enterKeyHandle: function _enterKeyHandle() {
      var editor = this.editor;
      var $textElem = editor.$textElem;

      function insertEmptyP($selectionElem) {
        var $p = $('<p><br></p>');
        $p.insertBefore($selectionElem);
        editor.selection.createRangeByElem($p, true);
        editor.selection.restoreSelection();
        $selectionElem.remove();
      }

      // 将回车之后生成的非 <p> 的顶级标签，改为 <p>
      function pHandle(e) {
        var $selectionElem = editor.selection.getSelectionContainerElem();
        var $parentElem = $selectionElem.parent();

        if ($parentElem.html() === '<code><br></code>') {
          // 回车之前光标所在一个 <p><code>.....</code></p> ，忽然回车生成一个空的 <p><code><br></code></p>
          // 而且继续回车跳不出去，因此只能特殊处理
          insertEmptyP($selectionElem);
          return;
        }

        if (!$parentElem.equal($textElem)) {
          // 不是顶级标签
          return;
        }

        var nodeName = $selectionElem.getNodeName();
        if (nodeName === 'P') {
          // 当前的标签是 P ，不用做处理
          return;
        }

        if ($selectionElem.text()) {
          // 有内容，不做处理
          return;
        }

        // 插入 <p> ，并将选取定位到 <p>，删除当前标签
        insertEmptyP($selectionElem);
      }

      $textElem.on('keyup', function (e) {
        if (e.keyCode !== 13) {
          // 不是回车键
          return;
        }
        // 将回车之后生成的非 <p> 的顶级标签，改为 <p>
        pHandle(e);
      });

      // <pre><code></code></pre> 回车时 特殊处理
      function codeHandle(e) {
        var $selectionElem = editor.selection.getSelectionContainerElem();
        if (!$selectionElem) {
          return;
        }
        var $parentElem = $selectionElem.parent();
        var selectionNodeName = $selectionElem.getNodeName();
        var parentNodeName = $parentElem.getNodeName();

        if (selectionNodeName !== 'CODE' || parentNodeName !== 'PRE') {
          // 不符合要求 忽略
          return;
        }

        if (!editor.cmd.queryCommandSupported('insertHTML')) {
          // 必须原生支持 insertHTML 命令
          return;
        }

        // 处理：光标定位到代码末尾，联系点击两次回车，即跳出代码块
        if (editor._willBreakCode === true) {
          // 此时可以跳出代码块
          // 插入 <p> ，并将选取定位到 <p>
          var $p = $('<p><br></p>');
          $p.insertAfter($parentElem);
          editor.selection.createRangeByElem($p, true);
          editor.selection.restoreSelection();

          // 修改状态
          editor._willBreakCode = false;

          e.preventDefault();
          return;
        }

        var _startOffset = editor.selection.getRange().startOffset;

        // 处理：回车时，不能插入 <br> 而是插入 \n ，因为是在 pre 标签里面
        editor.cmd.do('insertHTML', '\n');
        editor.selection.saveRange();
        if (editor.selection.getRange().startOffset === _startOffset) {
          // 没起作用，再来一遍
          editor.cmd.do('insertHTML', '\n');
        }

        var codeLength = $selectionElem.html().length;
        if (editor.selection.getRange().startOffset + 1 === codeLength) {
          // 说明光标在代码最后的位置，执行了回车操作
          // 记录下来，以便下次回车时候跳出 code
          editor._willBreakCode = true;
        }

        // 阻止默认行为
        e.preventDefault();
      }

      $textElem.on('keydown', function (e) {
        if (e.keyCode !== 13) {
          // 不是回车键
          // 取消即将跳转代码块的记录
          editor._willBreakCode = false;
          return;
        }
        // <pre><code></code></pre> 回车时 特殊处理
        codeHandle(e);
      });
    },

    // 清空时保留 <p><br></p>
    _clearHandle: function _clearHandle() {
      var editor = this.editor;
      var $textElem = editor.$textElem;

      $textElem.on('keydown', function (e) {
        if (e.keyCode !== 8) {
          return;
        }
        var txtHtml = $textElem.html().toLowerCase().trim();
        if (txtHtml === '<p><br></p>') {
          // 最后剩下一个空行，就不再删除了
          e.preventDefault();
          return;
        }
      });

      $textElem.on('keyup', function (e) {
        if (e.keyCode !== 8) {
          return;
        }
        var $p = void 0;
        var txtHtml = $textElem.html().toLowerCase().trim();

        // firefox 时用 txtHtml === '<br>' 判断，其他用 !txtHtml 判断
        if (!txtHtml || txtHtml === '<br>') {
          // 内容空了
          $p = $('<p><br/></p>');
          $textElem.html(''); // 一定要先清空，否则在 firefox 下有问题
          $textElem.append($p);
          editor.selection.createRangeByElem($p, false, true);
          editor.selection.restoreSelection();
        }
      });
    },

    // 粘贴事件（粘贴文字 粘贴图片）
    _pasteHandle: function _pasteHandle() {
      var editor = this.editor;
      var config = editor.config;
      var pasteFilterStyle = config.pasteFilterStyle;
      var pasteTextHandle = config.pasteTextHandle;
      var ignoreImg = config.pasteIgnoreImg;
      var $textElem = editor.$textElem;

      // 粘贴图片、文本的事件，每次只能执行一个
      // 判断该次粘贴事件是否可以执行
      var pasteTime = 0;

      function canDo() {
        var now = Date.now();
        var flag = false;
        if (now - pasteTime >= 100) {
          // 间隔大于 100 ms ，可以执行
          flag = true;
        }
        pasteTime = now;
        return flag;
      }

      function resetTime() {
        pasteTime = 0;
      }

      // 粘贴文字
      $textElem.on('paste', function (e) {
        if (UA.isIE()) {
          return;
        } else {
          // 阻止默认行为，使用 execCommand 的粘贴命令
          e.preventDefault();
        }

        // 粘贴图片和文本，只能同时使用一个
        if (!canDo()) {
          return;
        }

        // 获取粘贴的文字
        var pasteHtml = getPasteHtml(e, pasteFilterStyle, ignoreImg);
        var pasteText = getPasteText(e);
        pasteText = pasteText.replace(/\n/gm, '<br>');

        var $selectionElem = editor.selection.getSelectionContainerElem();
        if (!$selectionElem) {
          return;
        }
        var nodeName = $selectionElem.getNodeName();

        // code 中只能粘贴纯文本
        if (nodeName === 'CODE' || nodeName === 'PRE') {
          if (pasteTextHandle && isFunction(pasteTextHandle)) {
            // 用户自定义过滤处理粘贴内容
            pasteText = '' + (pasteTextHandle(pasteText) || '');
          }
          editor.cmd.do('insertHTML', '<p>' + pasteText + '</p>');
          return;
        }

        // 先放开注释，有问题再追查 ————
        // // 表格中忽略，可能会出现异常问题
        // if (nodeName === 'TD' || nodeName === 'TH') {
        //     return
        // }

        if (!pasteHtml) {
          // 没有内容，可继续执行下面的图片粘贴
          resetTime();
          return;
        }
        try {
          // firefox 中，获取的 pasteHtml 可能是没有 <ul> 包裹的 <li>
          // 因此执行 insertHTML 会报错
          if (pasteTextHandle && isFunction(pasteTextHandle)) {
            // 用户自定义过滤处理粘贴内容
            pasteHtml = '' + (pasteTextHandle(pasteHtml) || '');
          }
          editor.cmd.do('insertHTML', pasteHtml);
        } catch (ex) {
          // 此时使用 pasteText 来兼容一下
          if (pasteTextHandle && isFunction(pasteTextHandle)) {
            // 用户自定义过滤处理粘贴内容
            pasteText = '' + (pasteTextHandle(pasteText) || '');
          }
          editor.cmd.do('insertHTML', '<p>' + pasteText + '</p>');
        }
      });

      // 粘贴图片
      $textElem.on('paste', function (e) {
        if (UA.isIE()) {
          return;
        } else {
          e.preventDefault();
        }

        // 粘贴图片和文本，只能同时使用一个
        if (!canDo()) {
          return;
        }

        // 获取粘贴的图片
        var pasteFiles = getPasteImgs(e);
        if (!pasteFiles || !pasteFiles.length) {
          return;
        }

        // 获取当前的元素
        var $selectionElem = editor.selection.getSelectionContainerElem();
        if (!$selectionElem) {
          return;
        }
        var nodeName = $selectionElem.getNodeName();

        // code 中粘贴忽略
        if (nodeName === 'CODE' || nodeName === 'PRE') {
          return;
        }

        // 上传图片
        var uploadImg = editor.uploadImg;
        uploadImg.uploadImg(pasteFiles);
      });
    },

    // tab 特殊处理
    _tabHandle: function _tabHandle() {
      var editor = this.editor;
      var $textElem = editor.$textElem;

      $textElem.on('keydown', function (e) {
        if (e.keyCode !== 9) {
          return;
        }
        if (!editor.cmd.queryCommandSupported('insertHTML')) {
          // 必须原生支持 insertHTML 命令
          return;
        }
        var $selectionElem = editor.selection.getSelectionContainerElem();
        if (!$selectionElem) {
          return;
        }
        var $parentElem = $selectionElem.parent();
        var selectionNodeName = $selectionElem.getNodeName();
        var parentNodeName = $parentElem.getNodeName();

        if (selectionNodeName === 'CODE' && parentNodeName === 'PRE') {
          // <pre><code> 里面
          editor.cmd.do('insertHTML', '    ');
        } else {
          // 普通文字
          editor.cmd.do('insertHTML', '&nbsp;&nbsp;&nbsp;&nbsp;');
        }

        e.preventDefault();
      });
    },

    // img 点击
    _imgHandle: function _imgHandle() {
      var editor = this.editor;
      var $textElem = editor.$textElem;

      // 为图片增加 selected 样式
      $textElem.on('click', 'img', function (e) {
        var img = this;
        var $img = $(img);

        if ($img.attr('data-w-e') === '1') {
          // 是表情图片，忽略
          return;
        }

        // 记录当前点击过的图片
        editor._selectedImg = $img;

        // 修改选区并 restore ，防止用户此时点击退格键，会删除其他内容
        editor.selection.createRangeByElem($img);
        editor.selection.restoreSelection();
      });

      // 去掉图片的 selected 样式
      $textElem.on('click  keyup', function (e) {
        if (e.target.matches('img')) {
          // 点击的是图片，忽略
          return;
        }
        // 删除记录
        editor._selectedImg = null;
      });
    },

    // 拖拽事件
    _dragHandle: function _dragHandle() {
      var editor = this.editor;

      // 禁用 document 拖拽事件
      var $document = $(document);
      $document.on('dragleave drop dragenter dragover', function (e) {
        e.preventDefault();
      });

      // 添加编辑区域拖拽事件
      var $textElem = editor.$textElem;
      $textElem.on('drop', function (e) {
        e.preventDefault();
        var files = e.dataTransfer && e.dataTransfer.files;
        if (!files || !files.length) {
          return;
        }

        // 上传图片
        var uploadImg = editor.uploadImg;
        uploadImg.uploadImg(files);
      });
    }
  };

  /*
    命令，封装 document.execCommand
*/

// 构造函数
  function Command(editor) {
    this.editor = editor;
  }

// 修改原型
  Command.prototype = {
    constructor: Command,

    // 执行命令
    do: function _do(name, value) {
      var editor = this.editor;

      // 使用 styleWithCSS
      if (!editor._useStyleWithCSS) {
        document.execCommand('styleWithCSS', null, true);
        editor._useStyleWithCSS = true;
      }

      // 如果无选区，忽略
      if (!editor.selection.getRange()) {
        return;
      }

      // 恢复选取
      editor.selection.restoreSelection();

      // 执行
      var _name = '_' + name;
      if (this[_name]) {
        // 有自定义事件
        this[_name](value);
      } else {
        // 默认 command
        this._execCommand(name, value);
      }

      // 修改菜单状态
      editor.menus.changeActive();

      // 最后，恢复选取保证光标在原来的位置闪烁
      editor.selection.saveRange();
      editor.selection.restoreSelection();

      // 触发 onchange
      editor.change && editor.change();
    },

    // 自定义 insertHTML 事件
    _insertHTML: function _insertHTML(html) {
      var editor = this.editor;
      var range = editor.selection.getRange();

      if (this.queryCommandSupported('insertHTML')) {
        // W3C
        this._execCommand('insertHTML', html);
      } else if (range.insertNode) {
        // IE
        range.deleteContents();
        range.insertNode($(html)[0]);
      } else if (range.pasteHTML) {
        // IE <= 10
        range.pasteHTML(html);
      }
    },

    // 插入 elem
    _insertElem: function _insertElem($elem) {
      var editor = this.editor;
      var range = editor.selection.getRange();

      if (range.insertNode) {
        range.deleteContents();
        range.insertNode($elem[0]);
      }
    },

    // 封装 execCommand
    _execCommand: function _execCommand(name, value) {
      document.execCommand(name, false, value);
    },

    // 封装 document.queryCommandValue
    queryCommandValue: function queryCommandValue(name) {
      return document.queryCommandValue(name);
    },

    // 封装 document.queryCommandState
    queryCommandState: function queryCommandState(name) {
      return document.queryCommandState(name);
    },

    // 封装 document.queryCommandSupported
    queryCommandSupported: function queryCommandSupported(name) {
      return document.queryCommandSupported(name);
    }
  };

  /*
    selection range API
*/

// 构造函数
  function API(editor) {
    this.editor = editor;
    this._currentRange = null;
  }

// 修改原型
  API.prototype = {
    constructor: API,

    // 获取 range 对象
    getRange: function getRange() {
      return this._currentRange;
    },

    // 保存选区
    saveRange: function saveRange(_range) {
      if (_range) {
        // 保存已有选区
        this._currentRange = _range;
        return;
      }

      // 获取当前的选区
      var selection = window.getSelection();
      if (selection.rangeCount === 0) {
        return;
      }
      var range = selection.getRangeAt(0);

      // 判断选区内容是否在编辑内容之内
      var $containerElem = this.getSelectionContainerElem(range);
      if (!$containerElem) {
        return;
      }

      // 判断选区内容是否在不可编辑区域之内
      if ($containerElem.attr('contenteditable') === 'false' || $containerElem.parentUntil('[contenteditable=false]')) {
        return;
      }

      var editor = this.editor;
      var $textElem = editor.$textElem;
      if ($textElem.isContain($containerElem)) {
        // 是编辑内容之内的
        this._currentRange = range;
      }
    },

    // 折叠选区
    collapseRange: function collapseRange(toStart) {
      if (toStart == null) {
        // 默认为 false
        toStart = false;
      }
      var range = this._currentRange;
      if (range) {
        range.collapse(toStart);
      }
    },

    // 选中区域的文字
    getSelectionText: function getSelectionText() {
      var range = this._currentRange;
      if (range) {
        return this._currentRange.toString();
      } else {
        return '';
      }
    },

    // 选区的 $Elem
    getSelectionContainerElem: function getSelectionContainerElem(range) {
      range = range || this._currentRange;
      var elem = void 0;
      if (range) {
        elem = range.commonAncestorContainer;
        return $(elem.nodeType === 1 ? elem : elem.parentNode);
      }
    },
    getSelectionStartElem: function getSelectionStartElem(range) {
      range = range || this._currentRange;
      var elem = void 0;
      if (range) {
        elem = range.startContainer;
        return $(elem.nodeType === 1 ? elem : elem.parentNode);
      }
    },
    getSelectionEndElem: function getSelectionEndElem(range) {
      range = range || this._currentRange;
      var elem = void 0;
      if (range) {
        elem = range.endContainer;
        return $(elem.nodeType === 1 ? elem : elem.parentNode);
      }
    },

    // 选区是否为空
    isSelectionEmpty: function isSelectionEmpty() {
      var range = this._currentRange;
      if (range && range.startContainer) {
        if (range.startContainer === range.endContainer) {
          if (range.startOffset === range.endOffset) {
            return true;
          }
        }
      }
      return false;
    },

    // 恢复选区
    restoreSelection: function restoreSelection() {
      var selection = window.getSelection();
      selection.removeAllRanges();
      selection.addRange(this._currentRange);
    },

    // 创建一个空白（即 &#8203 字符）选区
    createEmptyRange: function createEmptyRange() {
      var editor = this.editor;
      var range = this.getRange();
      var $elem = void 0;

      if (!range) {
        // 当前无 range
        return;
      }
      if (!this.isSelectionEmpty()) {
        // 当前选区必须没有内容才可以
        return;
      }

      try {
        // 目前只支持 webkit 内核
        if (UA.isWebkit()) {
          // 插入 &#8203
          editor.cmd.do('insertHTML', '&#8203;');
          // 修改 offset 位置
          range.setEnd(range.endContainer, range.endOffset + 1);
          // 存储
          this.saveRange(range);
        } else {
          $elem = $('<strong>&#8203;</strong>');
          editor.cmd.do('insertElem', $elem);
          this.createRangeByElem($elem, true);
        }
      } catch (ex) {
        // 部分情况下会报错，兼容一下
      }
    },

    // 根据 $Elem 设置选区
    createRangeByElem: function createRangeByElem($elem, toStart, isContent) {
      // $elem - 经过封装的 elem
      // toStart - true 开始位置，false 结束位置
      // isContent - 是否选中Elem的内容
      if (!$elem.length) {
        return;
      }

      var elem = $elem[0];
      var range = document.createRange();

      if (isContent) {
        range.selectNodeContents(elem);
      } else {
        range.selectNode(elem);
      }

      if (typeof toStart === 'boolean') {
        range.collapse(toStart);
      }

      // 存储 range
      this.saveRange(range);
    }
  };

  /*
    上传进度条
*/

  function Progress(editor) {
    this.editor = editor;
    this._time = 0;
    this._isShow = false;
    this._isRender = false;
    this._timeoutId = 0;
    this.$textContainer = editor.$textContainerElem;
    this.$bar = $('<div class="w-e-progress"></div>');
  }

  Progress.prototype = {
    constructor: Progress,

    show: function show(progress) {
      var _this = this;

      // 状态处理
      if (this._isShow) {
        return;
      }
      this._isShow = true;

      // 渲染
      var $bar = this.$bar;
      if (!this._isRender) {
        var $textContainer = this.$textContainer;
        $textContainer.append($bar);
      } else {
        this._isRender = true;
      }

      // 改变进度（节流，100ms 渲染一次）
      if (Date.now() - this._time > 100) {
        if (progress <= 1) {
          $bar.css('width', progress * 100 + '%');
          this._time = Date.now();
        }
      }

      // 隐藏
      var timeoutId = this._timeoutId;
      if (timeoutId) {
        clearTimeout(timeoutId);
      }
      timeoutId = setTimeout(function () {
        _this._hide();
      }, 500);
    },

    _hide: function _hide() {
      var $bar = this.$bar;
      $bar.remove();

      // 修改状态
      this._time = 0;
      this._isShow = false;
      this._isRender = false;
    }
  };

  var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
    return typeof obj;
  } : function (obj) {
    return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
  };

  /*
    上传图片
*/

// 构造函数
  function UploadImg(editor) {
    this.editor = editor;
  }

// 原型
  UploadImg.prototype = {
    constructor: UploadImg,

    // 根据 debug 弹出不同的信息
    _alert: function _alert(alertInfo, debugInfo) {
      var editor = this.editor;
      var debug = editor.config.debug;
      var customAlert = editor.config.customAlert;

      if (debug) {
        throw new Error('wangEditor: ' + (debugInfo || alertInfo));
      } else {
        if (customAlert && typeof customAlert === 'function') {
          customAlert(alertInfo);
        } else {
          alert(alertInfo);
        }
      }
    },

    // 根据链接插入图片
    insertLinkImg: function insertLinkImg(link) {
      var _this2 = this;

      if (!link) {
        return;
      }
      var editor = this.editor;
      var config = editor.config;

      // 校验格式
      var linkImgCheck = config.linkImgCheck;
      var checkResult = void 0;
      if (linkImgCheck && typeof linkImgCheck === 'function') {
        checkResult = linkImgCheck(link);
        if (typeof checkResult === 'string') {
          // 校验失败，提示信息
          alert(checkResult);
          return;
        }
      }

      editor.cmd.do('insertHTML', '<img src="' + link + '" style="max-width:100%;"/>');

      // 验证图片 url 是否有效，无效的话给出提示
      var img = document.createElement('img');
      img.onload = function () {
        var callback = config.linkImgCallback;
        if (callback && typeof callback === 'function') {
          callback(link);
        }

        img = null;
      };
      img.onerror = function () {
        img = null;
        // 无法成功下载图片
        _this2._alert('插入图片错误', 'wangEditor: \u63D2\u5165\u56FE\u7247\u51FA\u9519\uFF0C\u56FE\u7247\u94FE\u63A5\u662F "' + link + '"\uFF0C\u4E0B\u8F7D\u8BE5\u94FE\u63A5\u5931\u8D25');
        return;
      };
      img.onabort = function () {
        img = null;
      };
      img.src = link;
    },

    // 上传图片
    uploadImg: function uploadImg(files) {
      var _this3 = this;

      if (!files || !files.length) {
        return;
      }

      // ------------------------------ 获取配置信息 ------------------------------
      var editor = this.editor;
      var config = editor.config;
      var uploadImgServer = config.uploadImgServer;
      var uploadImgShowBase64 = config.uploadImgShowBase64;

      var maxSize = config.uploadImgMaxSize;
      var maxSizeM = maxSize / 1024 / 1024;
      var maxLength = config.uploadImgMaxLength || 10000;
      var uploadFileName = config.uploadFileName || '';
      var uploadImgParams = config.uploadImgParams || {};
      var uploadImgParamsWithUrl = config.uploadImgParamsWithUrl;
      var uploadImgHeaders = config.uploadImgHeaders || {};
      var hooks = config.uploadImgHooks || {};
      var timeout = config.uploadImgTimeout || 3000;
      var withCredentials = config.withCredentials;
      if (withCredentials == null) {
        withCredentials = false;
      }
      var customUploadImg = config.customUploadImg;

      if (!customUploadImg) {
        // 没有 customUploadImg 的情况下，需要如下两个配置才能继续进行图片上传
        if (!uploadImgServer && !uploadImgShowBase64) {
          return;
        }
      }

      // ------------------------------ 验证文件信息 ------------------------------
      var resultFiles = [];
      var errInfo = [];
      arrForEach(files, function (file) {
        var name = file.name;
        var size = file.size;

        // chrome 低版本 name === undefined
        if (!name || !size) {
          return;
        }

        if (/\.(jpg|jpeg|png|bmp|gif|webp)$/i.test(name) === false) {
          // 后缀名不合法，不是图片
          errInfo.push('\u3010' + name + '\u3011\u4E0D\u662F\u56FE\u7247');
          return;
        }
        if (maxSize < size) {
          // 上传图片过大
          errInfo.push('\u3010' + name + '\u3011\u5927\u4E8E ' + maxSizeM + 'M');
          return;
        }

        // 验证通过的加入结果列表
        resultFiles.push(file);
      });
      // 抛出验证信息
      if (errInfo.length) {
        this._alert('图片验证未通过: \n' + errInfo.join('\n'));
        return;
      }
      if (resultFiles.length > maxLength) {
        this._alert('一次最多上传' + maxLength + '张图片');
        return;
      }

      // ------------------------------ 自定义上传 ------------------------------
      if (customUploadImg && typeof customUploadImg === 'function') {
        customUploadImg(resultFiles, this.insertLinkImg.bind(this));

        // 阻止以下代码执行
        return;
      }

      // 添加图片数据
      var formdata = new FormData();
      arrForEach(resultFiles, function (file) {
        var name = uploadFileName || file.name;
        formdata.append(name, file);
      });

      // ------------------------------ 上传图片 ------------------------------
      if (uploadImgServer && typeof uploadImgServer === 'string') {
        // 添加参数
        var uploadImgServerArr = uploadImgServer.split('#');
        uploadImgServer = uploadImgServerArr[0];
        var uploadImgServerHash = uploadImgServerArr[1] || '';
        objForEach(uploadImgParams, function (key, val) {
          // 因使用者反应，自定义参数不能默认 encode ，由 v3.1.1 版本开始注释掉
          // val = encodeURIComponent(val)

          // 第一，将参数拼接到 url 中
          if (uploadImgParamsWithUrl) {
            if (uploadImgServer.indexOf('?') > 0) {
              uploadImgServer += '&';
            } else {
              uploadImgServer += '?';
            }
            uploadImgServer = uploadImgServer + key + '=' + val;
          }

          // 第二，将参数添加到 formdata 中
          formdata.append(key, val);
        });
        if (uploadImgServerHash) {
          uploadImgServer += '#' + uploadImgServerHash;
        }

        // 定义 xhr
        var xhr = new XMLHttpRequest();
        xhr.open('POST', uploadImgServer);

        // 设置超时
        xhr.timeout = timeout;
        xhr.ontimeout = function () {
          // hook - timeout
          if (hooks.timeout && typeof hooks.timeout === 'function') {
            hooks.timeout(xhr, editor);
          }

          _this3._alert('上传图片超时');
        };

        // 监控 progress
        if (xhr.upload) {
          xhr.upload.onprogress = function (e) {
            var percent = void 0;
            // 进度条
            var progressBar = new Progress(editor);
            if (e.lengthComputable) {
              percent = e.loaded / e.total;
              progressBar.show(percent);
            }
          };
        }

        // 返回数据
        xhr.onreadystatechange = function () {
          var result = void 0;
          if (xhr.readyState === 4) {
            if (xhr.status < 200 || xhr.status >= 300) {
              // hook - error
              if (hooks.error && typeof hooks.error === 'function') {
                hooks.error(xhr, editor);
              }

              // xhr 返回状态错误
              _this3._alert('上传图片发生错误', '\u4E0A\u4F20\u56FE\u7247\u53D1\u751F\u9519\u8BEF\uFF0C\u670D\u52A1\u5668\u8FD4\u56DE\u72B6\u6001\u662F ' + xhr.status);
              return;
            }

            result = xhr.responseText;
            if ((typeof result === 'undefined' ? 'undefined' : _typeof(result)) !== 'object') {
              try {
                result = JSON.parse(result);
              } catch (ex) {
                // hook - fail
                if (hooks.fail && typeof hooks.fail === 'function') {
                  hooks.fail(xhr, editor, result);
                }

                _this3._alert('上传图片失败', '上传图片返回结果错误，返回结果是: ' + result);
                return;
              }
            }
            if (!hooks.customInsert && result.errno != '0') {
              // hook - fail
              if (hooks.fail && typeof hooks.fail === 'function') {
                hooks.fail(xhr, editor, result);
              }

              // 数据错误
              _this3._alert('上传图片失败', '上传图片返回结果错误，返回结果 errno=' + result.errno);
            } else {
              if (hooks.customInsert && typeof hooks.customInsert === 'function') {
                // 使用者自定义插入方法
                hooks.customInsert(_this3.insertLinkImg.bind(_this3), result, editor);
              } else {
                // 将图片插入编辑器
                var data = result.data || [];
                data.forEach(function (link) {
                  _this3.insertLinkImg(link);
                });
              }

              // hook - success
              if (hooks.success && typeof hooks.success === 'function') {
                hooks.success(xhr, editor, result);
              }
            }
          }
        };

        // hook - before
        if (hooks.before && typeof hooks.before === 'function') {
          var beforeResult = hooks.before(xhr, editor, resultFiles);
          if (beforeResult && (typeof beforeResult === 'undefined' ? 'undefined' : _typeof(beforeResult)) === 'object') {
            if (beforeResult.prevent) {
              // 如果返回的结果是 {prevent: true, msg: 'xxxx'} 则表示用户放弃上传
              this._alert(beforeResult.msg);
              return;
            }
          }
        }

        // 自定义 headers
        objForEach(uploadImgHeaders, function (key, val) {
          xhr.setRequestHeader(key, val);
        });

        // 跨域传 cookie
        xhr.withCredentials = withCredentials;

        // 发送请求
        xhr.send(formdata);

        // 注意，要 return 。不去操作接下来的 base64 显示方式
        return;
      }

      // ------------------------------ 显示 base64 格式 ------------------------------
      if (uploadImgShowBase64) {
        arrForEach(files, function (file) {
          var _this = _this3;
          var reader = new FileReader();
          reader.readAsDataURL(file);
          reader.onload = function () {
            _this.insertLinkImg(this.result);
          };
        });
      }
    }
  };

  /*
上传视频
*/

// 构造函数
  function UploadVideo(editor) {
    this.editor = editor;
  }

// 原型
  UploadVideo.prototype = {
    constructor: UploadVideo,
    // 根据 debug 弹出不同的信息
    _alert: function _alert(alertInfo, debugInfo) {
      var editor = this.editor;
      var debug = editor.config.debug;
      // var debug = true;
      var customAlert = editor.config.customAlert;

      if (debug) {
        throw new Error('wangEditor: ' + (debugInfo || alertInfo));
      } else {
        if (customAlert && typeof customAlert === 'function') {
          customAlert(alertInfo);
        } else {
          alert(alertInfo);
        }
      }
    },
    insertVideo: function (link) {//autoplay="autoplay"
      if (!link) {
        return;
      }
      var editor = this.editor;
      editor.cmd.do('insertHTML', '<div>video<video src="' + link + '" style="max-width: 100%;" autoplay="autoplay"  controls="controls"  loop="loop" /></div>');
      editor.initSelection(true);
    },
    // 上传视频
    uploadVideo: function uploadVideo(files) {
      var _this3 = this;

      if (!files || !files.length) {
        return;
      }

      // ------------------------------ 获取配置信息 ------------------------------
      var editor = this.editor;
      var config = editor.config;
      var uploadImgServer = "/api/blade-file/file/upload";//api/blade-file/file/upload
      // var uploadImgShowBase64 = config.uploadImgShowBase64;

      var maxSize = 200 * 1024 * 1024;       //100M
      var maxSizeM = maxSize / 1000 / 1000;
      var maxLength = 1;
      var uploadFileName = "file";
      var uploadImgParams = config.uploadImgParams || {};
      // var uploadImgParamsWithUrl = config.uploadImgParamsWithUrl;
      var uploadImgHeaders = {};
      var hooks = config.uploadImgHooks || {};
      var timeout = 5 * 60 * 1000;        //5 min
      var withCredentials = config.withCredentials;
      if (withCredentials == null) {
        withCredentials = false;
      }

      // ------------------------------ 验证文件信息 ------------------------------
      var resultFiles = [];
      var errInfo = [];
      arrForEach(files, function (file) {
        var name = file.name;
        var size = file.size;

        // chrome 低版本 name === undefined
        if (!name || !size) {
          return;
        }

        if (/\.(mp4)$/i.test(name) === false) {
          // 后缀名不合法，不是图片
          errInfo.push('\u3010' + name + '\u3011\u4E0D\u662F\u56FE\u7247');
          return;
        }
        if (maxSize < size) {
          // 上传图片过大
          errInfo.push('\u3010' + name + '\u3011\u5927\u4E8E ' + maxSizeM + 'M');
          return;
        }

        // 验证通过的加入结果列表
        resultFiles.push(file);
      });
      // 抛出验证信息
      if (errInfo.length) {
        this._alert('视频验证未通过: \n' + errInfo.join('\n'));
        return;
      }
      if (resultFiles.length > maxLength) {
        this._alert('一次最多上传' + maxLength + '个视频');
        return;
      }

      // ------------------------------ 自定义上传 ------------------------------
      // 添加视频数据
      var formdata = new FormData();
      arrForEach(resultFiles, function (file) {
        formdata.append('file', file);
      });
      // ------------------------------ 上传视频 ------------------------------
      config.customUploadVideo(formdata, this.insertVideo.bind(this))
      return;
    }
  };

  /*
    编辑器构造函数
*/

// id，累加
  var editorId = 1;

// 构造函数
  function Editor(toolbarSelector, textSelector) {
    if (toolbarSelector == null) {
      // 没有传入任何参数，报错
      throw new Error('错误：初始化编辑器时候未传入任何参数，请查阅文档');
    }
    // id，用以区分单个页面不同的编辑器对象
    this.id = 'wangEditor-' + editorId++;

    this.toolbarSelector = toolbarSelector;
    this.textSelector = textSelector;

    // 自定义配置
    this.customConfig = {};
  }

// 修改原型
  Editor.prototype = {
    constructor: Editor,

    // 初始化配置
    _initConfig: function _initConfig() {
      // _config 是默认配置，this.customConfig 是用户自定义配置，将它们 merge 之后再赋值
      var target = {};
      this.config = Object.assign(target, config, this.customConfig);

      // 将语言配置，生成正则表达式
      var langConfig = this.config.lang || {};
      var langArgs = [];
      objForEach(langConfig, function (key, val) {
        // key 即需要生成正则表达式的规则，如“插入链接”
        // val 即需要被替换成的语言，如“insert link”
        langArgs.push({
          reg: new RegExp(key, 'img'),
          val: val

        });
      });
      this.config.langArgs = langArgs;
    },

    // 初始化 DOM
    _initDom: function _initDom() {
      var _this = this;

      var toolbarSelector = this.toolbarSelector;
      var $toolbarSelector = $(toolbarSelector);
      var textSelector = this.textSelector;

      var config$$1 = this.config;
      var zIndex = config$$1.zIndex;

      // 定义变量
      var $toolbarElem = void 0,
        $textContainerElem = void 0,
        $textElem = void 0,
        $children = void 0;

      if (textSelector == null) {
        // 只传入一个参数，即是容器的选择器或元素，toolbar 和 text 的元素自行创建
        $toolbarElem = $('<div></div>');
        $textContainerElem = $('<div></div>');

        // 将编辑器区域原有的内容，暂存起来
        $children = $toolbarSelector.children();

        // 添加到 DOM 结构中
        $toolbarSelector.append($toolbarElem).append($textContainerElem);

        // 自行创建的，需要配置默认的样式
        $toolbarElem.css('background-color', '#f1f1f1').css('border', '1px solid #ccc');
        $textContainerElem.css('border', '1px solid #ccc').css('border-top', 'none').css('height', '300px');
      } else {
        // toolbar 和 text 的选择器都有值，记录属性
        $toolbarElem = $toolbarSelector;
        $textContainerElem = $(textSelector);
        // 将编辑器区域原有的内容，暂存起来
        $children = $textContainerElem.children();
      }

      // 编辑区域
      $textElem = $('<div></div>');
      $textElem.attr('contenteditable', 'true').css('width', '100%').css('height', '100%');

      // 初始化编辑区域内容
      if ($children && $children.length) {
        $textElem.append($children);
      } else {
        $textElem.append($('<p><br></p>'));
      }

      // 编辑区域加入DOM
      $textContainerElem.append($textElem);

      // 设置通用的 class
      $toolbarElem.addClass('w-e-toolbar');
      $textContainerElem.addClass('w-e-text-container');
      $textContainerElem.css('z-index', zIndex);
      $textElem.addClass('w-e-text');

      // 添加 ID
      var toolbarElemId = getRandom('toolbar-elem');
      $toolbarElem.attr('id', toolbarElemId);
      var textElemId = getRandom('text-elem');
      $textElem.attr('id', textElemId);

      // 记录属性
      this.$toolbarElem = $toolbarElem;
      this.$textContainerElem = $textContainerElem;
      this.$textElem = $textElem;
      this.toolbarElemId = toolbarElemId;
      this.textElemId = textElemId;

      // 记录输入法的开始和结束
      var compositionEnd = true;
      $textContainerElem.on('compositionstart', function () {
        // 输入法开始输入
        compositionEnd = false;
      });
      $textContainerElem.on('compositionend', function () {
        // 输入法结束输入
        compositionEnd = true;
      });

      // 绑定 onchange
      $textContainerElem.on('click keyup', function () {
        // 输入法结束才出发 onchange
        compositionEnd && _this.change && _this.change();
      });
      $toolbarElem.on('click', function () {
        this.change && this.change();
      });

      //绑定 onfocus 与 onblur 事件
      if (config$$1.onfocus || config$$1.onblur) {
        // 当前编辑器是否是焦点状态
        this.isFocus = false;

        $(document).on('click', function (e) {
          //判断当前点击元素是否在编辑器内
          var isChild = $textElem.isContain($(e.target));

          //判断当前点击元素是否为工具栏
          var isToolbar = $toolbarElem.isContain($(e.target));
          var isMenu = $toolbarElem[0] == e.target ? true : false;

          if (!isChild) {
            //若为选择工具栏中的功能，则不视为成blur操作
            if (isToolbar && !isMenu) {
              return;
            }

            if (_this.isFocus) {
              _this.onblur && _this.onblur();
            }
            _this.isFocus = false;
          } else {
            if (!_this.isFocus) {
              _this.onfocus && _this.onfocus();
            }
            _this.isFocus = true;
          }
        });
      }
    },

    // 封装 command
    _initCommand: function _initCommand() {
      this.cmd = new Command(this);
    },

    // 封装 selection range API
    _initSelectionAPI: function _initSelectionAPI() {
      this.selection = new API(this);
    },

    // 添加图片上传
    _initUploadImg: function _initUploadImg() {
      this.uploadImg = new UploadImg(this);
    },
    // 添加视频上传
    _initUploadVideo: function _initUploadVideo() {
      this.uploadVideo = new UploadVideo(this);
    },
    // 初始化菜单
    _initMenus: function _initMenus() {
      this.menus = new Menus(this);
      this.menus.init();
    },

    // 添加 text 区域
    _initText: function _initText() {
      this.txt = new Text(this);
      this.txt.init();
    },

    // 初始化选区，将光标定位到内容尾部
    initSelection: function initSelection(newLine) {
      var $textElem = this.$textElem;
      var $children = $textElem.children();
      if (!$children.length) {
        // 如果编辑器区域无内容，添加一个空行，重新设置选区
        $textElem.append($('<p><br></p>'));
        this.initSelection();
        return;
      }

      var $last = $children.last();

      if (newLine) {
        // 新增一个空行
        var html = $last.html().toLowerCase();
        var nodeName = $last.getNodeName();
        if (html !== '<br>' && html !== '<br\/>' || nodeName !== 'P') {
          // 最后一个元素不是 <p><br></p>，添加一个空行，重新设置选区
          $textElem.append($('<p><br></p>'));
          this.initSelection();
          return;
        }
      }

      this.selection.createRangeByElem($last, false, true);
      this.selection.restoreSelection();
    },

    // 绑定事件
    _bindEvent: function _bindEvent() {
      // -------- 绑定 onchange 事件 --------
      var onChangeTimeoutId = 0;
      var beforeChangeHtml = this.txt.html();
      var config$$1 = this.config;

      // onchange 触发延迟时间
      var onchangeTimeout = config$$1.onchangeTimeout;
      onchangeTimeout = parseInt(onchangeTimeout, 10);
      if (!onchangeTimeout || onchangeTimeout <= 0) {
        onchangeTimeout = 200;
      }

      var onchange = config$$1.onchange;
      if (onchange && typeof onchange === 'function') {
        // 触发 change 的有三个场景：
        // 1. $textContainerElem.on('click keyup')
        // 2. $toolbarElem.on('click')
        // 3. editor.cmd.do()
        this.change = function () {
          // 判断是否有变化
          var currentHtml = this.txt.html();

          if (currentHtml.length === beforeChangeHtml.length) {
            // 需要比较每一个字符
            if (currentHtml === beforeChangeHtml) {
              return;
            }
          }

          // 执行，使用节流
          if (onChangeTimeoutId) {
            clearTimeout(onChangeTimeoutId);
          }
          onChangeTimeoutId = setTimeout(function () {
            // 触发配置的 onchange 函数
            onchange(currentHtml);
            beforeChangeHtml = currentHtml;
          }, onchangeTimeout);
        };
      }

      // -------- 绑定 onblur 事件 --------
      var onblur = config$$1.onblur;
      if (onblur && typeof onblur === 'function') {
        this.onblur = function () {
          var currentHtml = this.txt.html();
          onblur(currentHtml);
        };
      }

      // -------- 绑定 onfocus 事件 --------
      var onfocus = config$$1.onfocus;
      if (onfocus && typeof onfocus === 'function') {
        this.onfocus = function () {
          onfocus();
        };
      }
    },

    // 创建编辑器
    create: function create() {
      // 初始化配置信息
      this._initConfig();

      // 初始化 DOM
      this._initDom();

      // 封装 command API
      this._initCommand();

      // 封装 selection range API
      this._initSelectionAPI();

      // 添加 text
      this._initText();

      // 初始化菜单
      this._initMenus();

      // 添加 图片上传
      this._initUploadImg();

      // 添加 视频上传
      this._initUploadVideo();
      // 初始化选区，将光标定位到内容尾部
      this.initSelection(true);

      // 绑定事件
      this._bindEvent();
    },

    // 解绑所有事件（暂时不对外开放）
    _offAllEvent: function _offAllEvent() {
      $.offAll();
    }
  };

// 检验是否浏览器环境
  try {
    document;
  } catch (ex) {
    throw new Error('请在浏览器环境下运行');
  }

// polyfill
  polyfill();

// 这里的 `inlinecss` 将被替换成 css 代码的内容，详情可去 ./gulpfile.js 中搜索 `inlinecss` 关键字
  var inlinecss = '.w-e-toolbar,.w-e-text-container,.w-e-menu-panel {  padding: 0;  margin: 0;  box-sizing: border-box;}.w-e-toolbar *,.w-e-text-container *,.w-e-menu-panel * {  padding: 0;  margin: 0;  box-sizing: border-box;}.w-e-clear-fix:after {  content: "";  display: table;  clear: both;}.w-e-toolbar .w-e-droplist {  position: absolute;  left: 0;  top: 0;  background-color: #fff;  border: 1px solid #f1f1f1;  border-right-color: #ccc;  border-bottom-color: #ccc;}.w-e-toolbar .w-e-droplist .w-e-dp-title {  text-align: center;  color: #999;  line-height: 2;  border-bottom: 1px solid #f1f1f1;  font-size: 13px;}.w-e-toolbar .w-e-droplist ul.w-e-list {  list-style: none;  line-height: 1;}.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item {  color: #333;  padding: 5px 0;}.w-e-toolbar .w-e-droplist ul.w-e-list li.w-e-item:hover {  background-color: #f1f1f1;}.w-e-toolbar .w-e-droplist ul.w-e-block {  list-style: none;  text-align: left;  padding: 5px;}.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item {  display: inline-block;  *display: inline;  *zoom: 1;  padding: 3px 5px;}.w-e-toolbar .w-e-droplist ul.w-e-block li.w-e-item:hover {  background-color: #f1f1f1;}@font-face {  font-family: \'w-e-icon\';  src: 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format(\'truetype\');  font-weight: normal;  font-style: normal;}[class^="w-e-icon-"],[class*=" w-e-icon-"] {  /* use !important to prevent issues with browser extensions that change fonts */  font-family: \'w-e-icon\' !important;  speak: none;  font-style: normal;  font-weight: normal;  font-variant: normal;  text-transform: none;  line-height: 1;  /* Better Font Rendering =========== */  -webkit-font-smoothing: antialiased;  -moz-osx-font-smoothing: grayscale;}.w-e-icon-close:before {  content: "\\f00d";}.w-e-icon-upload2:before {  content: "\\e9c6";}.w-e-icon-trash-o:before {  content: "\\f014";}.w-e-icon-header:before {  content: "\\f1dc";}.w-e-icon-pencil2:before {  content: "\\e906";}.w-e-icon-paint-brush:before {  content: "\\f1fc";}.w-e-icon-image:before {  content: "\\e90d";}.w-e-icon-play:before {  content: "\\e912";}.w-e-icon-location:before {  content: "\\e947";}.w-e-icon-undo:before {  content: "\\e965";}.w-e-icon-redo:before {  content: "\\e966";}.w-e-icon-quotes-left:before {  content: "\\e977";}.w-e-icon-list-numbered:before {  content: "\\e9b9";}.w-e-icon-list2:before {  content: "\\e9bb";}.w-e-icon-link:before {  content: "\\e9cb";}.w-e-icon-happy:before {  content: "\\e9df";}.w-e-icon-bold:before {  content: "\\ea62";}.w-e-icon-underline:before {  content: "\\ea63";}.w-e-icon-italic:before {  content: "\\ea64";}.w-e-icon-strikethrough:before {  content: "\\ea65";}.w-e-icon-table2:before {  content: "\\ea71";}.w-e-icon-paragraph-left:before {  content: "\\ea77";}.w-e-icon-paragraph-center:before {  content: "\\ea78";}.w-e-icon-paragraph-right:before {  content: "\\ea79";}.w-e-icon-terminal:before {  content: "\\f120";}.w-e-icon-page-break:before {  content: "\\ea68";}.w-e-icon-cancel-circle:before {  content: "\\ea0d";}.w-e-icon-font:before {  content: "\\ea5c";}.w-e-icon-text-heigh:before {  content: "\\ea5f";}.w-e-toolbar {  display: -webkit-box;  display: -ms-flexbox;  display: flex;  padding: 0 5px;  /* flex-wrap: wrap; */  /* 单个菜单 */}.w-e-toolbar .w-e-menu {  position: relative;  text-align: center;  padding: 5px 10px;  cursor: pointer;}.w-e-toolbar .w-e-menu i {  color: #999;}.w-e-toolbar .w-e-menu:hover i {  color: #333;}.w-e-toolbar .w-e-active i {  color: #1e88e5;}.w-e-toolbar .w-e-active:hover i {  color: #1e88e5;}.w-e-text-container .w-e-panel-container {  position: absolute;  top: 0;  left: 50%;  border: 1px solid #ccc;  border-top: 0;  box-shadow: 1px 1px 2px #ccc;  color: #333;  background-color: #fff;  /* 为 emotion panel 定制的样式 */  /* 上传图片的 panel 定制样式 */}.w-e-text-container .w-e-panel-container .w-e-panel-close {  position: absolute;  right: 0;  top: 0;  padding: 5px;  margin: 2px 5px 0 0;  cursor: pointer;  color: #999;}.w-e-text-container .w-e-panel-container .w-e-panel-close:hover {  color: #333;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-title {  list-style: none;  display: -webkit-box;  display: -ms-flexbox;  display: flex;  font-size: 14px;  margin: 2px 10px 0 10px;  border-bottom: 1px solid #f1f1f1;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-title .w-e-item {  padding: 3px 5px;  color: #999;  cursor: pointer;  margin: 0 3px;  position: relative;  top: 1px;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-title .w-e-active {  color: #333;  border-bottom: 1px solid #333;  cursor: default;  font-weight: 700;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content {  padding: 10px 15px 10px 15px;  font-size: 16px;  /* 输入框的样式 */  /* 按钮的样式 */}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content input:focus,.w-e-text-container .w-e-panel-container .w-e-panel-tab-content textarea:focus,.w-e-text-container .w-e-panel-container .w-e-panel-tab-content button:focus {  outline: none;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content textarea {  width: 100%;  border: 1px solid #ccc;  padding: 5px;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content textarea:focus {  border-color: #1e88e5;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content input[type=text] {  border: none;  border-bottom: 1px solid #ccc;  font-size: 14px;  height: 20px;  color: #333;  text-align: left;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content input[type=text].small {  width: 30px;  text-align: center;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content input[type=text].block {  display: block;  width: 100%;  margin: 10px 0;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content input[type=text]:focus {  border-bottom: 2px solid #1e88e5;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button {  font-size: 14px;  color: #1e88e5;  border: none;  padding: 5px 10px;  background-color: #fff;  cursor: pointer;  border-radius: 3px;}.w-e-text-container .w-e-panel-container .w-e-panel-tab-content .w-e-button-container button.left {  float: left;  margin-right: 10px;}.w-e-text-container .w-e-panel-container 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border-left: 1px solid #ccc;}.w-e-text table td,.w-e-text table th {  border-bottom: 1px solid #ccc;  border-right: 1px solid #ccc;  padding: 3px 5px;}.w-e-text table th {  border-bottom: 2px solid #ccc;  text-align: center;}.w-e-text:focus {  outline: none;}.w-e-text img {  cursor: pointer;}.w-e-text img:hover {  box-shadow: 0 0 5px #333;}';

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